Determine whether you should use the pooled t-test or the nonpooled t-test.
Provide a rationale.
Perform the hypothesis test.
Analyze the test results, state your conclusion(s), and provide the rationale for your statement(s).
Using Excel statistical functions and formulas:
Calculate the confidence interval.
Looking at the result, state your conclusion.
How does this result change or confirm your analysis and conclusion(s) from the hypothesis test? Provide a rationale.
Inferential statistics is used to test the likelihood that the difference between the means of two groups is due to chance. There are many situations where this type of analysis is useful. Provide a situation example of where you would test the differences between two means for each of the following categories.
airlines
business
medicine
education
For each example cited, do you think you would be using the pooled t-test, the nonpooled t-test, or the t-test for paired samples? Provide the rationale for each answer.
Sample Solution
