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Is a flu shot really effective? In 2012-2013 the CDC reported that the flu vaccine was 56% effective. That is, 56% of all people receiving the flu vaccine who were exposed to a flu virus did not contract the flu. To check this claim (56% effective), a random sample of 50 at-risk people who received a flu shot was selected. During the flu season, all 50 were exposed to the flu and 29 actually contracted the disease. Is there any evidence to suggest the claim is false, that the chance of contracting the flu is greater than 44%?
The discussion surrounding the ANOVA is very important. This is a widely utilized statistical tool. What is the ANOVA? What is the purpose of the ANOVA? What role does variation have in the discussion? What is the purpose of the F distributio..
if the temperature at which a certain compound melts is a random variable with mean value 120 degree celsius and
According to The Wirthlin Report, 24% of all workers say that their job is very stressful. If 60 workers are randomly selected.
Formulate and test an appropriate set of hypotheses to determine if the machine can be qualified. Use a = 0.05. Find the P-value.
Conduct a descriptive analysis on any 2 interval / ratio variables - The abstract briefly summarizes your paper in 120 words or less.
a. What are the mean and standard deviation of the number of online retail orders that turn out to be fraudulent? b. What is the probability that zero online retail orders will turn out to be fraudulent? c. What is the probability that one online ret..
What is the purpose of conducting an experiment? How does an experimental design accomplish its purpose? In an educational study, what are the advantages and disadvantages of an experimental design?
Translate the following statements into symbolic form using capital letters to represent affirmative English statements.- JP Morgan's getting another bailout implies that Goldman Sachs cheats its clients, given that Bank of America's foreclosing on..
a bus passes by a certain street corner every morning around 900 a.m. let x be the difference in minutes between the
If a simple random sample of 75 MBA graduates is to be taken. What is the probability that the sample mean salary will exceed $82,500?
State the hypotheses that you are testing. Determine the critical value of χ2 and your decision rule. Calculate the χ2 test statistic for this data. (Show all workings). State your decision and conclusion.
Explain, to a person who has never had a course in statistics, what you have done. (c) Note the ways in which the means and standard deviations differ.
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