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Discuss examples where you would use test of hypothesis at your personal or professional life, in your education or society for the following situations:
(a) For two population means and discuss if the example would use large samples or small samples.
(b) For two population proportions.
Identify a decision process within your work or business interests that could be resolved based on data.
They hope to use a sample size such that, with probability 0.95, the error will not exceed 0.04. What sample size will ensure this, regardless of what sample proportion value occurs when they gather the sample?
Frequently, tests that yield abnormal results are repeated for confirmation. What is the probability that for a normal person a test will be at least 1.5 times as high as the upper limit of normal on two separate occasions?
Describe the kinds of statistical software that are available to healthcare professionals.
Develop a 90% confidence interval for the true mean weight. What sample size would be necessary to estimate the true weight with an error of +/- 0.03 grams with 90% confidence?
Create Frequency Distribution of Sample Mean. Compute and Identifies Sampling Distribution of Sample Mean.
Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks such as problem solving ( Linde & Bergstroem, 1992).
A survey of top executives revealed that 35 percent of them regularly read Time magazine, 20 percent read Newsweek, and 40 percent read U.S. News and World Report. Ten percent read both Time and U.S. News and World Report.
Determine the variance of X? (Illustrate your computation either in Table or in Equation form)
A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages. On each page
When doing hypothesis testing we have two ways of making a decision - the critical value method and the p-value method. While both give the same results in terms of determining whether to reject or not reject the null hypothesis
Bougainvilleas, mean growth rate was 2.23 inches/week and sample standard deviation was 0.77 inches/week. Determine a 90% confidence interval for mean growth rate of all Bougainvilleas.
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