1 / 8

Exam 3 Questions

Exam 3 Questions. 1. Test statistic t=1.79, n=33. Find and interpret the P-value. 2. Find the critical value(s) for a one-tail hypothesis test with and a 0.10 significance level.

britanni-rogers
Télécharger la présentation

Exam 3 Questions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Exam 3 Questions

  2. 1. Test statistic t=1.79, n=33. Find and interpret the P-value. 2. Find the critical value(s) for a one-tail hypothesis test with and a 0.10 significance level. 3. For a confidence interval on the proportion of college students that have children, John found that E=.12. Interpret his margin of error.

  3. 4. Original claim: The mean height of NBA basketball players is at least 6 feet 8 inches. What are the null and alternative hypotheses? 5. Original claim: The mean height of NBA basketball players is at least 6 feet 8 inches. Initial conclusion is reject the null. State the final conclusion in simple nontechnical terms.

  4. 6. Claim: The proportion of male students born in the last half of the year is less than the proportion of female students born in the last half of the year. Use a 0.10 significance level. Data: from MTH 243 students Total students Born in last 6 months Male: 18 8 Female: 21 14

  5. 7. You have developed a new drug and you claim that it lowers cholesterol, so you express the claim as , where 100 is a standardized index of cholesterol. Which P-value would you prefer to get: 0.04 or 0.01? Why?

  6. 8. Consumers will spend an estimated average of $483 on merchandise for back to school spending based on a survey of 8453 consumers with a margin of error of plus or minus 1 percentage point. What is wrong with this statement?

  7. 9. We wish to conduct a poll to determine the percent of adults who feel that bars should refuse service to patrons who dance on the tables. If we wish to be 95% confident that the margin of error is 2%, how large should my sample be?

  8. 10. Discuss two different triggers for rejecting a null hypothesis. 11. What is the difference between a test statistic and a critical value? 12. What is the difference between an alpha and a P-value.

More Related