B2C (Business to Consumer) case study Essay Example | Topics and Well Written Essays - 3500 words - 1

B2C (Business to Consumer) case study - Essay Example E-commerce is the doing business on the Internet, not only purchasing and selling, but providing services to customers and collaborating with trade partners. Organizations recognize that putting up easy online sites for employees, customers, and associates does not generate an e-business (Voges and Pope 2006). E-business online sites must generate a buzz, as Amazon has made in the bookselling business. E-business online sites must be inventive, add value, and supply constructive information. In brief, the site has to build a sense of collaboration and community, ultimately transforming the port of entry for commerce. Comprehending e-business starts with understanding the disruptive technology, accessing internet information, evolution of the internet, and providing internet information In the 90s, dotcoms such as Amazon.com and eBay which were rapidly attainment in dimension and market capitalization created a threat to conventional brick and mortar commerce (Mortensen 2007). In numerous ways, these dotcoms appeared to be redrafting the regulations of business; they had the consumers with no the expenses of sustaining physical stores, minimal inventory, unrestricted access to resources and little concern regarding actual earnings. The concept was to obtain big fast and be concerned about profits afterwards (Grefen 2010). By late 1999, Amazon.com had a market share of approximately $25 billion, obscuring some of the biggest and most developed corporations in America. Since that time, retail giants like Wal-mart and Kmart were anticipating cashing in on the dotcom challenges, also other small businesses that were in the market opposing the retail giants, but were not in a stable position (Schepp and Schepp 2009).   Many never survived it to the first public initia l offer after the Nasdaq commenced to drop in mid 2000. Almost as fast as the dotcom

Elements Of Design In A Play Essay Example for Free

Elements Of Design In A Play Essay There are many things which can both attribute and take away from the overall production of a performance or play such as a Shakespeare play. Such things include costumes, props, lighting, set, and sound. All of these factors are vital in the ending effect that the performance has on the viewing audience. Firstly, when attending a play, their are several things that one will notice; all of which will contribute to the sufficiency or insufficiency of the performance. Among these many things include costumes. Costumes are considered to be one of the most influential and important factors or aspects of the play itself. For example, the colors of the costume help to set the mode and theme of the play. If the play is considered to be a somber or tragic and sorrowful play, then the colors of the costume may be dark and morbid. The darkness of the costumes will add to the morbidness of the play. This is a considered to be a vital aspect by many to any play or performance. However, if a play is uplifting and happy and the costumes should also represent the same thing. They too should be uplifting and bright. Thus, the colors of the costumes should be bright and colorful. Therefore, a happy play representing colorful costumes on their actors is vital in the overall production of the play because it adds to the joyfulness and bright aura that is to be represented through the performance. Another important factor which importantly attributes to the success of a play is the sound or the music. Without the proper music, the play will not appropriately fit with the story-line as it should. For example, with a tragedy, such as Romeo and Juliet, much of the music is somber and sad. Without the emotion emanating from this music, the final influence of the production would not be the same as if the music were cheerful and happy throughout the entire play. Also, with a play that is cheerful and happy, the music must be cheerful and bright. Sound is vital in any performance and play. Without it, the play will be dull and unfitting with the plot of the story. The music adds to the emotion and the effect of the play. Next, the set itself is also extremely important in contributing to the overall success of the play or performance. It must be carefully detailed and match with the era or time that the play is supposed to be taken place in. For example, if you were having a play that was supposed to have taken place before electricity was invented and the set included objects such as light bulbs and television sets, this would conflict with the entire plot, because it would not make any sense. Thus, the set is extremely important. Another extremely and vitally important aspect that attributes to the success or failure of plays and productions are props. Props are anything from pots and pans to furniture and food. Whichever props are used in a play should be affiliated with the time period that the play was supposed to take place in, just as the set should be. Finally, our last and equally important attributing aspect for plays is lighting. Without the proper lighting a play can be a complete and utter failure. However, with the necessary lighting that is require to see each and every prop, background, and costume, the play should certainly be a success if all of the other aspects are followed through properly. SOURCES: Musical: Cats (Broadway)

The Zombie Horror Genre Film Studies Essay

The Zombie Horror Genre Film Studies Essay -The zombie horror Genre is the theme and genre that will be analyzed to understand the detailed examination of a recurring pattern between these types of movies. There will be many examples of the films from this genre to support my arguments. The literary influences on the genre such as Richard Matheson helped to usher in a new type of monster that was caused by humans through contamination. George A. Romeo built upon this idea to give us more and different types of ideas. The variations and changes within the genre over the years has been one that consisted of far off set and poorly constructed monsters. The impact of particular individuals on the genre such as George A. Romeo has lead to a completely different kind of movie. The importance of social and economic forces on the genre has influenced a resurrection of the horror zombie genre. The world in horror films is inclined to end with alarm not quietly but the type of alarm depends on the film. The main prevailing manner of ma ss annihilation in horror movies is reason they are so interesting. Each film will divulge something fascinating about our society and the uncertainties and fears that we all share. An exceptional zombie movie will make you sympathize with the characters and build on the plot to allow for a real deep developed film. Zombie movies pick out are darkest fears and put them into film to scare us whether it may add political undertones. These movies depict the world being completely empty from the evil undead monsters because they have destroyed social order. Zombie movies need a strong lead character that is willing to fight for all the members of the team and for the less fortunate that are in need. These films tend to have dark scenes and lighting setting the mood for fear and adrenaline to scare the audience. They have poorly lit at night in a familiar location where help is not available or never seems to come. There are terrible hidden secret that tends to be overly shocking. They tend to have a tragic hero that never wanted to be that is searching for their own family members. The monsters or villains never truly die and can always be brought back or explained why they never truly died. Cliffhangers are a main theme of horror movies as it can always be left open to the idea of a sequel The older zombie movies depicted viral pathogens. An immense global epidemic state of affairs became progressively more popular in the 1970s. As greater than before sexual freedom, elevated the distress of infectious ailments such as sexually transmitted diseases. By the turn of the 21st century, the increases of notable illness like swine flu, AIDS, SARS and the Ebola virus. This allowed these sort of end of the world movies to be a popular subject of horror films. Zombie movies have changed from the early days of the original zombie films. These modern zombie flicks bring a completely new dimension. Back in the day, either a chemical spill or voodoo curse that could cause the dead to rise. The Night of the Living Dead zombie movie was a revolutionary interweave into this film. This may have been the start of a new type of zombie film. George Romeros Night of the Living Dead reinvented zombie tradition in 1968. The zombie apocalypse of the past the graphic violence was able to repro duce the amplified glumness of the Vietnam War period. In the modern times, the zombie apocalypse has had a resurrection, prompted by worries of terrorism, disease, and global flux, which is basically a division of the viral infection. The zombie contagion in which a pathogen triggers the dead to rise has undertaken an existence of its own regard since then. The Last Man on Earth (1964), The Plague of the Zombies (1966), Night of the Living Dead (1968), The Omega Man (1971), The Crazies (1973), Rabid (1977), Dawn of the Dead (1978), Burial Ground: Nights of Terror (1981), Day of the Dead (1985), Dead Alive (1992), 28 Days Later (2002), Shaun of the Dead (2004), Angry and Moist: An Undead Chronicle (2004), Dawn of the Dead (2004), Land of the Dead (2005), 28 Weeks Later (2007), Planet Terror (2007), I Am Legend (2007), Resident Evil: Extinction (2007), Mulberry Street (2007), Day of the Dead (2008), Doomsday (2008), Diary of the Dead (2008), The Signal (2008), Zombieland (2009), Carr iers (2009), Pontypool (2009) and The Crazies (2010). The movie and all its successors initiate the zombie film to generate numerous copycats that used the fundamentals establishment by George A. Romero. Some of these such movies are: Tombs of the Blind Dead (1971), Zombie (1979), Hell of the Living Dead (1980), Night of the Comet (1984), Return of the Living Dead (1985), Night of the Creeps (1986), Children of the Living Dead (2001), House of the Dead (2003).. The video game series Resident Evil that was eventually made into films in 2002, 2004, 2007 and 2010 and the video games series Dead Rising (2006). Night of the Living Dead is spoofed in movies such as Night of the Living Bread (1990) or Shaun of the Dead (2004). Some of the television shows are that have used the idea are Buffy the Vampire Slayer, South Park, Pink Eye (1997), Halloween Spectacular of Spooky Doom (2001) and FBI Warning of Doom (2002). There are also others such as Night of the Living Homeless (2007), Medium; Bite Me (2009), The Simpsons Treehouse of Horror III (1 992), XIII (2004) and XX (2009). Operation Doom (2010) George A. Romeros movie Night of the Living Dead leads in the splatter film sub-genre. Prior to this film horror had frequently portrayed people in bad costumes, rubber masks, cardboard arrays or shadowy figures that creep around mysteriously. They were set in locations distant from suburban and rural America. Romero exposed the influence behind utilization and setting horror in common and normal locations. This offered a model for creating a successful and profitable film on a very small development budget. The slasher movies of the 1970s and 1980s to name a few notable ones such as John Carpenters Halloween (1978), Sean S. Cunninghams Friday the 13th (1980), and Wes Cravens A Nightmare on Elm Street (1984). All of these movies are indebted to the original concepts Night of the Living Dead, which they later used to inspire them in their own films. Each of these films was successful in their own right and adds something new to the horror genre. This movie I Am Legend (2007) is not a zombie movie but it does fit into the idea that a plague has changed the human population and destroyed it. I Am Legend (2007) is a remake of the original The Omega Man. It is from the genre of the drama, horror, sci-fi and thriller. A year after an infection destroys nearly all of humanity and changes the rest into monsters. The sole survivor in New York City strives boldly to find a cure. Richard Mathesons literary novel did influence many movies such as The Last Man on Earth written in 1964, Night of the Living Dead (1967), The Omega Man in 1971 and I Am Omega (2007. The movie Night of the Living Dead (1967) spurred the genre in a new direction for many years to come. Robert Neville was an ordinary person who was caught up in extraordinary circumstances. Neville is a scientist who was powerless to prevent the spread of the horrifying virus that was untreatable and fabricated by man. Neville is resistant and now the final human being survivor in what remains of New York City and possibly the whole world. Neville has dependably transmitted daily radio messages for three years. He is burdened to locate any other survivors who may be out there. Nonetheless, he is never truly alone because altered victims of the infection the contaminated skulk in the darkness watching his every move. They are waiting for him to make a critical error in judgment. He has hope to able to save humankind but he knows that time is running out. Neville wants to discover a technique to undo the problems of the virus using his own blood, which is immune. This is his one mission that drives him to keep going each day. Dawn of the Dead (2004) is an action, drama, horror and is a remake of the original movie Dawn of the Dead (1978). It was George A. Romero who was able to transform and modernize the zombie horror film genre by means of producing Night of the Living Dead this movie represented a new dawn in horror filmmaking. The film has also successfully been able to distinguish the use of the expression zombie. This is one example of the serene beginning to a zombie horror film that extra long. The sky view is the picture of perfect serenity. It all creates a more tragic scene when quite surprisingly, morning comes all too excessively soon. With morning, all that is rational ceases to exist. The pure pandemonium of the circumstances of an epidemic of a deadly virus that turns those infected into the undead. It comes so abruptly that it clutches the viewer from beginning to end. A nurse, a police officer, a young married couple, a sales representative and many other survivors of a worldwide afflict ion band together to fight for their lives. The affliction is producing aggressive, flesh-eating zombies and the survivors procure shelter in a shopping mall. This is a nightmare of a horror movie, which contains real horror thrills. The survivors protected at the abandoned local mall. People not being content to fight just an outside force must also be fighting with each other. The infection begins slithering increasingly close to bring them all to the threshold of extermination. The zombies are extremely quick and a lone bite from them leads to bleak fate of mindlessness and but solitary gunshot to the head prevents them. 28 Days later (2002) is of the genre horror, sci-fi, and thriller. This movie is about a rage virus that forces the contaminated crazy person to be hungry for blood and filled with extreme rage. Within 28 days or four weeks after the mysterious outbreak, that takes place in London. A few remaining survivors attempt to locate a sanctuary, while the incurable virus spreads throughout the United Kingdom. The entire population is either dead or evacuated leaving behind bloodthirsty contaminated inhabitants and a few of the solitary unaffected individuals. Civilization has come to a standstill; the inhuman suffererà ¢Ã¢â€š ¬Ã¢â€ž ¢s frequent attacks devastate the social order, while those limited survivorà ¢Ã¢â€š ¬Ã¢â€ž ¢s battle for continued existence. Danny Boyleà ¢Ã¢â€š ¬Ã¢â€ž ¢s 28 Days Later is a classic among a multitude of zombie and biohazard movies. This movie contains within it that there is always a tinge of sadness, emptiness, helplessness. A prime example is the empty Lon don scene with that background music. This films utmost accomplishment is to allow the audience to remain unbiased all the way through the movie. This is exclusive of picking either side this is because the virus is simply used as a metaphor. Dead and undead both can be sympathized with since neither truly wants to be in either predicament. Rage is depicted as a serious social disease. That idea allows the film to a much more serious one and not just another zombie movie. It is a movie with a message to the audience to wake up and look around them at the social disorder that is already occurring every day. Resident Evil (2002) movie the film adaptation based on a video game. The genre is action adventure horror. It became a successful franchise video game series Resident Evil that was eventually made into films in 2002, 2004, 2007 and 2010. Paul W. S. Anderson was the director of this particular movie but with each movie, the director changed. This may have helped keep the movies fresh and inspired. A special military division battles an authoritative, unmanageable supercomputer that has engineered a virus. After a laboratory accident, many scientists have mutated into zombies. It has turned most of the scientists and employees of the facility into rampaging flesh eating zombies. Much gunfire, combating, explosions aid in developing the mysterious cliffhanger ending that leaves things extensive unwrapped for another sequel. Up until this point, the zombie movie theme seemed to be much outdated. They were still making them throughout the 1990s but we they were not as popular as films li ke that George A. Romero did. Nothing was particularly innovative or exhilarating was being made with the zombie concept. The one place where it was really doing well was in the world of gaming such as Resident Evil. Even when a film is in production, very few movies based on these games stick to the intended story line. Resident Evil brought resurgence to the zombie movie subgenera and was hot again. More and more zombie movies were being made and Most zombie films start with the picture of perfect serenity to allow the viewers to get comfortable before the mayhem begins. The viewers are allowed to learn a little bit about the character and get to like them. Once you begin to like the character then they are eradicating in a gruesome way and the viewer feels for them. They feel like they personally have gotten to know some of their journey and feels for them. Fans of zombie movies may be a smidgen dissatisfied when a movie takes a while for the zombies to show up and start their mayhem. These types of movies are trying to establish a plot and story line. Most films are by-product of other action, science fiction and zombie films. Another type of opening scene that is popular is the sudden and fearful jolt of a tense and terrifying opening sequence. A film that moves at a brisk pace that uses slow motion so the viewer can catch important scenes. Fan are much more interested in these types of scenarios but they do leave little t o the imagination of what the movie is really about. Most of these movies do have a satisfying conclusion are the only real problem areas in the horror movie genre. This is to be expected in the genre as not all the questions can ever be answered and some mystery must be left for sequels if they are to follow. Being that they are horror movies characters no matter how much you like them, they must die in order to continue with the story line. In zombie films the characters are picked off one by one People must work together to survive in a horror film and if they do not overcome their differences and band together they will survive until the end. The characters come from all occupations to learn to get along collectively. Almost immediately more survivors arrive and they discover that if they wish to remain alive, they should bond together as the army of undead overruns the world. The genre is every changing and having new life breathed into it as new film makers finish school and are inspired to change the old into something new and f resh.

Origins of The Beauty Myth :: Naomi Wolf, The Beauty Myth

Naomi Wolf's "The Beauty Myth," discusses the impact of our male-dominated society upon women. Wolf argues that women's most significant problems associated with societal pressures are a "fairly recent invention," dating back to the 1970s (6). She explains that women have "breached the power structure" by acquiring rights equal to men in areas such as, education, professional careers, and voting. As a result, Wolf suggests that the "beauty myth" is the "last one remaining of the old feminine ideologies that still has the power to control those women" (3). Considering that the beauty myth is women's last battle, the struggle is increasingly more difficult. Wolf claims that women are currently experiencing "a violent backlash against feminism," noting the recent rise in eating disorders, cosmetic surgery, and objectification of women's bodies (3,2). While Wolf accurately defines the beauty myth, she incorrectly states that eating disorders, cosmetic surgery, and pornography are recent issues, resulting from an intentional "backlash" against women's rights. Wolf utilizes the term "the beauty myth" to demonstrate that the interpretation of beauty is a creation of society, intended to keep women trapped inside their bodies. Wolf claims that the beauty myth "is not about women at all." She explains, "it is about men's institutions and institutional power" (5). In addition, she claims that women have recently obtained numerous rights, which now threaten "to destabilize the institutions on which a male-dominated culture has depended." She continues to explain that "a collective panic reaction [†¦] has forced a demand for counter images" (8). Clearly, society as a whole does create pressure on women to act in a certain manner. However, Wolf's implication that it is an intentional, organized effort to keep women oppressed is one-sided and extreme. While Wolf fails to conclusively prove that the beauty myth is an organized group effort, she is certainly correct in her explanation of the symptoms associated with the beauty myth: There is a secret "underlife" poisoning our freedom; infused with notions of beauty, it is a dark vein of self-hatred, physical obsessions, terror of aging, and dread of lost control. (3) According to Laura Shapiro, a notable researcher on eating disorders, the medical condition of anorexia consists of several elements. By definition, anorexia nervosa is a condition characterized by intense fear of gaining weight or becoming obese, as well as a distorted body image, and a feeling of loss of control (Shapiro 69). Origins of The Beauty Myth :: Naomi Wolf, The Beauty Myth Naomi Wolf's "The Beauty Myth," discusses the impact of our male-dominated society upon women. Wolf argues that women's most significant problems associated with societal pressures are a "fairly recent invention," dating back to the 1970s (6). She explains that women have "breached the power structure" by acquiring rights equal to men in areas such as, education, professional careers, and voting. As a result, Wolf suggests that the "beauty myth" is the "last one remaining of the old feminine ideologies that still has the power to control those women" (3). Considering that the beauty myth is women's last battle, the struggle is increasingly more difficult. Wolf claims that women are currently experiencing "a violent backlash against feminism," noting the recent rise in eating disorders, cosmetic surgery, and objectification of women's bodies (3,2). While Wolf accurately defines the beauty myth, she incorrectly states that eating disorders, cosmetic surgery, and pornography are recent issues, resulting from an intentional "backlash" against women's rights. Wolf utilizes the term "the beauty myth" to demonstrate that the interpretation of beauty is a creation of society, intended to keep women trapped inside their bodies. Wolf claims that the beauty myth "is not about women at all." She explains, "it is about men's institutions and institutional power" (5). In addition, she claims that women have recently obtained numerous rights, which now threaten "to destabilize the institutions on which a male-dominated culture has depended." She continues to explain that "a collective panic reaction [†¦] has forced a demand for counter images" (8). Clearly, society as a whole does create pressure on women to act in a certain manner. However, Wolf's implication that it is an intentional, organized effort to keep women oppressed is one-sided and extreme. While Wolf fails to conclusively prove that the beauty myth is an organized group effort, she is certainly correct in her explanation of the symptoms associated with the beauty myth: There is a secret "underlife" poisoning our freedom; infused with notions of beauty, it is a dark vein of self-hatred, physical obsessions, terror of aging, and dread of lost control. (3) According to Laura Shapiro, a notable researcher on eating disorders, the medical condition of anorexia consists of several elements. By definition, anorexia nervosa is a condition characterized by intense fear of gaining weight or becoming obese, as well as a distorted body image, and a feeling of loss of control (Shapiro 69).

Teams and Team Processes: Group Dynamics

Teams are often depicted as a group of people sharing leadership of and working together on a specific project, whereas a group (but not a team) consists of individuals who work independently and are led by a strong, focused individual (Erofeev, Glazer, & Ivanitskaya, 2009). In the health care organization, it is important to have a group of people working together as a well a team. Each person individually need to fully understand what his or her role is in a group or team, if not there will be conflicts. Teams and Team Processes: Group Dynamics What is a group? A group consists of two or more people who interact with each other and share a common purpose (Erofeev, Glazer, & Ivanitskaya, 2009). A team is a type of group (Erofeev, Glazer, & Ivanitskaya, 2009). Teams are an essential part of any organization, especially within the healthcare organization. Each individual on a team plays a vital role in ensuring that all needs are met, task are completed daily and patients are being ca red for properly. Teamwork and collaboration between all health professionals results in high quality clinical care, and increased job satisfaction for staff (Begley, 2009). When team members do not agree on the same goal, conflicts will arise. It is important for healthcare managers to control and management all conflicts within the organization. The key to successful conflict management is for each side to first stop trying to â€Å"make each other wrong,† and then to find solutions that approximate each side’s goals (Haraway & Haraway III, 2005). In the case study presented, Nurse B voices concerns about working with fellow staff members of the surgical team. The atmosphere and moral for the team is steadily declining. In addition the job satisfaction and passion to go to work has also been impacted. In order for a team to be effective and provide quality care, the atmosphere of the team needs to be welcomed and appreciated. Better outcomes will be achieved when team members perceive supportive team atmosphere and an empowering team contact with clear and jointly developed goals, an appropriate mix of skills and expertise, and rewards linked to team performance (Proenca, 2007). After further review of the case study, conflict management among team members needs to be addressed. Resolving conflict can often be like a constant balancing act among the opposing needs and interests; conflict can be unpleasant and stressful (Haraway & Haraway III, 2005). Conflict manage is essential for the success of healthcare organizations. Learning, as an organization, to constructively manage and succeed in conflict situations is a foundational construct of leadership and management (Ledlow, 2009). There are six different conflict styles: (1) accommodating, (2) avoiding, (3) collaborating, (4) competing, (5) compromising and (6) problem solving. After reading the case study, the surgical team is displaying conflict style of avoiding â€Å"potential disruption outweighs the benefits of resolution, gathering information supersedes immediate decision making, others can resolve the conflict more effectively and issues seem a result of other issues,† (Ledlow, 2009). Instead of going to the Physician Assistant, Nurse B should feel comfortable speaking to the surgeon with her questions and concerns. In addition to displaying avoiding conflict style, Nurse B surgical team is also experiencing role conflict. Role conflict arises when a focal person’s ideas of his or her requirements are incongruent with expectations from roles set members (Erofeev, Glazer, & Ivanitskaya, 2009). It is vital for each person to know what his or her role is. There are four types of role conflicts: (1) intrarole, (2) intrasender, (3) interole and (4) inersender. The general distinction between these four types of conflict is whether the focal person is perceiving the incongruence with his or her own standards or values (intra-) or whether the focal person recognizes the conflict arising due incompatibilities among others and/or policies (inter-) (Erofeev, Glazer, & Ivanitskaya, 2009). In order for Nurse B surgical team to be successful, each staff member must realize they are a group of people who collectively make up one team. The four steps to transform a group into team are: (1) forming, (2) storming, (3) norming and (4) performing. In forming, the team has initial contact with other staff members to see who will be a part of the team. There will be different views on how procedures should be. In step two, storming, the group will have conflict with role, status and power of each member. The next step, normimg group member will begin to create and agree upon the rules of the group. Finally in step four, performing, the team knows and understands what each of their roles are and begins to work together as a team to achieve the same goal. Once the group comes together collectively, Nurse B surgical team will have group cohesion. Group cohesion refers to a shared vision, unity of goals and objectives, pride in group membership, and collective group identity (Erofeev, Glazer, & Ivanitskaya, 2009). After the team has been established, each team member must continue to strive toward the same goal. Intervention technique is a good recommendation for Nurse B surgical team. Intervention helps to improve situations. An intervention can be a training session on conflict resolution, changes made to team structure, and the development of guidelines outlining team members’ roles. Intervention helps to provide training to team members on what procedures are still current and the procedures not being used. Goal setting training leads to greater effectiveness at the individual level and improved team efficiency (Erofeev, Glazer, & Ivanitskaya, 2009). In summary, Nurse B surgical team will be successful once he or she identifies his or her conflicts and begin working as a team; thus improving the efficiency and quality of the department. In a team, individuals’ actions are interdependent and coordinated, each member has a specified role, and members share common task goals or objectives (Erofeev, Glazer, & Ivanitskaya, 2009). Conflict management and role conflict can hinder the success of a team. Role conflict arises when a focal person’s ideas of his or her requirements are incongruent with expectations from role set members (Erofeev, Glazer, & Ivanitskaya, 2009). Trust and communication is important to the success of a team. A key component to healthy group dynamics is communication or role expectation; trust is developed when team members experience seemingly predictable situations, exchange information about oneself with others, reciprocate, and open up (Erofeev, Glazer, & Ivanitskaya, 2009). It essential for healthcare managers to ensure that each person understands what his or her roles are. Healthcare administrators must take steps to design better teams, train team members to work together, manage team performance, structure the work performed by the team and provide support to team members (Erofeev, Glazer, & Ivanitskaya, 2009).

King of Canada

Stat 332 Sampling and Experimental Design: (Due: 12:29pm before class, Friday, Oct 19, 2012) Assignment 2 1. In the upcoming US presidential election this November, Florida is a key swing state that is very important in determining the outcome. Currently the Democratic candidate Barack Obama and the Republican candidate Mitt Romney are virtually tied in recent polls. For this question, you can use 9 million as our population size; this is approximately the total number votes in the 2008 presidential election in Florida. a) The latest poll asked 890 likely voters and found that the proportion of Florida residents likely to vote for the Democratic candidate is 47%, construct a 95% con? dence interval for this estimate under the SRSWOR. By the way, the support for Republican is 46%, and the rest are undecided. (b) If a news organization wants to conduct a SRSWOR survey to ? nd out the percentage of Florida residents supporting the Democratic candidate, what is the sample size needed to achieve a result which is accurate within 0. percentage point, 19 out 20 times? 2. We have 120 students in Stat332. (a) What is the total number of possible samples of size 10 under SRSWOR? (b) Suppose that among the 120 students of Stat332, 60 are male students and 60 are female students. We want to perform a STSRS (strati? ed simple random sampling) with male students and female students being two strata, and we want to survey 5 students from each stratum, what is the total number of possible samples? What is the ratio of the two numbers (STSRS/SRSWOR)? 3. Lohr (2010) Ch3, Q10 part a.Hard shell clams may be sampled by using a dredge. Clams do not tend to be uniformly distributed in a body of water, however, as some areas provide better habitat than others. Thus, taking a simple random sample is likely to result in a large estimated variance for the number of clams in an area. Russell (1972) used strati? ed random sampling to estimate the total number of bushels of hard shell clams (Mercenaria mercenaria) in Narragansett Bay, Rhode Island. The area of interest was divided into four strata based on preliminary surveys that identi? d areas in which clams were abundant. Then nh dredge tows were made in stratum h, for h = 1, 2, 3, 4. The acreage for each stratum was known, and Russell calculated that the area ? shed during a standard dredge tow was 0. 039 acres, so that we may use Nh = 25. 6 ? Areah . Here are the results from the survey taken before the commercial season. Estimate the total number of bushels of clams in the area, and give the standard error of your estimate. Stratum 1 2 3 4 Area Number of (Acres) Tows Made 222. 81 4 49. 61 6 50. 25 3 197. 1 5 Average Number of Sample Variance Bushels per Tow for Stratum 0. 44 0. 068 1. 17 0. 042 3. 92 2. 146 1. 80 0. 794 4. Assume the sample variance in Q3 is a good estimate for the strata variance, and we want a strati? ed sample size of n = 21. (a) Calculate the stratum sample sizes under proportional allocati on. (b) Calculate the stratum sample sizes under optimal (Neyman) allocation. (c) What are the values (approximately) of V (? st ) with sample size allocations of (a) and y (b), respectively? Compare these two variances and comment. . Foresters want to estimate the average age of trees in a stand. Determining age is cumbersome, because one needs to count the tree rings on a core taken from the tree. In general, though, the older the tree, the larger the diameter, and diameter is easy to measure. The foresters measure the diameter of all 1132 trees and ? nd that the population mean equals 10. 3. They then randomly select 20 trees for age measurement. The data can be downloaded as hw2q5. txt from course website on Waterloo Learn and read into R using d