Review of Key Concepts for the Final Exam (Chapters 5 10) 1. What are the two ways (i.e., wording used in the question) a question can ask you to calculate a confidence interval? 1a: What is the key word that lets you know the CI is for mu 1b. What is the key word that lets you know the CI is for p. 2. What would be the z-score or t-score (choose the correct one) for finding a 99% confidence interval for the population proportion? Assume n = 50 3. What would be the z-score or t-score (choose the correct one) for finding a 99% confidence interval for the population mean? Assume n = 50 4. What are the key words that tell you the question is asking you to perform a hypothesis test? 5a: What is the key word that lets you know the hypothesis test is about mu? 5b: What is the key word that lets you know the hypothesis test is about p? 5c: What is the key word(s) that let you know you should use the t_d-test? 5d: What is the key word(s) that let you know you should use the t_p-test? 6. Find the rejection region for testing Ho: p = 0.50 versus Ha: p > 0.50. How is it different if the Ha is changed to \"not equal to\"? 7. Assume Ho: p = 0.50 and Ha: p > 0.50. Assume phat equals 0.52 and n = 50. Find the p-value. How is it different if the Ha is changed to \"not equal to"? 8. What are the assumptions of the pooled t-test and how do we verify them? 9. When do you use the pooled ttest; when do you use the td test