2. Rules Teams of five or less students. Choose team name… Write up four answer cards: A, B, C and D Answer when prompted. Winning team’s players earn a small bonus on Exam 3.

3. Question 1 A two-tailed hypothesis test with α = 3% has what critical value(s)? A. -1.88 B. 1.88 C. ± 1.88 D. ± 2.17

4. Question 1 A two-tailed hypothesis test with α = 3% has what critical value(s)? A. -1.88 B. 1.88 C. ± 1.88 D. ± 2.17

5. Question 2 If a jury convicts an innocent defendant, this is an example of: A. A Type α error. B. A Type β error. C. A Type 1 error. D. A Type 2 error.

6. Question 2 If a jury convicts an innocent defendant, this is an example of: A. A Type α error. B. A Type β error. C. A Type 1 error. D. A Type 2 error.

7. Question 3 For the HT problem on the board, the z stat = A. 0.92 B. 1.82 C. 2.05 D. 3.40

8. Question 3 For the HT problem on the board, the z stat = A. 0.92 B. 1.82 C. 2.05 D. 3.40

9. Question 4 For the problem on the board, the correct interpretation of the p-value is: A. There is only a 3.4% chance that the alternative hypothesis is true. B. There is only a 3.4% chance that the null hypothesis is true. C. There is only a 3.4% chance that we would get our data (or worse) assuming the alternative is true. D. There is only a 3.4% chance that we would get our data (or worse) assuming the null is true.

10. Question 4 For the problem on the board, the correct interpretation of the p-value is: A. There is only a 3.4% chance that the alternative hypothesis is true. B. There is only a 3.4% chance that the null hypothesis is true. C. There is only a 3.4% chance that we would get our data (or worse) assuming the alternative is true. D. There is only a 3.4% chance that we would get our data (or worse) assuming the null is true.

11. Question 5 For the problem on the board, the final answer is: A. Accept H 0, the population mean is about 1000. B. Accept H 0, the sample mean is about 1000. C. Reject H 0, the population mean is greater than 1000. D. Reject H 0, the sample mean is greater than 1000.

12. Question 5 For the problem on the board, the final answer is: A. Accept H 0, the population mean is about 1000. B. Accept H 0, the sample mean is about 1000. C. Reject H 0, the population mean is greater than 1000. D. Reject H 0, the sample mean is greater than 1000.

13. Question 6 Which statement is FALSE: A. A small p-value is evidence against the null. B. A large p-value supports the null. C. A critical value close to zero is evidence against the null. D. A critical value close to zero supports the null.

14. Question 6 Which statement is FALSE: A. A small p-value is evidence against the null. B. A large p-value supports the null. C. A critical value close to zero is evidence against the null. D. A critical value close to zero supports the null.

15. Daily Double! http://www.youtube.com/watch?v=E5LTzcDevrk You can bet up to half your current score. Leading team tells bet first… If you are wrong, you lose the points. 8 questions remaining. Category T-Pain

16. Question 7: Daily Double For a left-tailed t-test (H a : μ < 100) with n = 15 and α = 5%, the correct t crit is: A. 1.761 B. 1.753 C. 2.145 D. None of the above.

17. Question 7 For a left-tailed t-test (H a : μ < 100) with n = 15 and α = 5%, the correct t crit is: A. 1.761 B. 1.753 C. 2.145 D. None of the above. t crit = -1.761.

18. Question 8 Do FLC students spend more than $700 annually on textbooks? Assume that you survey 50 students and find that the average book cost is $817 with sd $223. At α = 5%, is there significant statistical evidence that, on average, FLC students spend more than $700 annually? A. >, z, p B. <, t, μ C. ≠, z, p D. >, z, μ

19. Question 8 Do FLC students spend more than $700 annually on textbooks? Assume that you survey 50 students and find that the average book cost is $817 with sd $223. At α = 5%, is there significant statistical evidence that, on average, FLC students spend more than $700 annually? A. >, z, p B. <, t, μ C. ≠, z, p D. >, z, μ

20. Question 9 A population proportion is claimed to be 75%. Your sample has n = 60 and x = 49. Is the claim right or wrong? What is the sample proportion? A. 23% B. 75% C. 82% D. 119%

21. Question 9 A population proportion is claimed to be 75%. Your sample has n = 60 and x = 49. Is the claim right or wrong? What is the sample proportion? A. 23% B. 75% C. 82% D. 119%

22. Question 10 A population proportion is claimed to be 75%. Your sample has n = 60 and x = 49. Is the claim right or wrong? Which is true: A. The p-value absolutely rejects the null B. The p-value rejects the null, but it’s close. C. The p-value is plausible. D. The p-value absolutely confirms the null.

23. Question 10 A population proportion is claimed to be 75%. Your sample has n = 60 and x = 47. Is the claim right or wrong? Which is true: A. The p-value absolutely rejects the null B. The p-value rejects the null, but it’s close. C. The p-value is plausible. D. The p-value absolutely confirms the null.

24. Question 11 On a Yes or No question, 65% of men (out of 40) answered Yes and 82% of women (out of 50) answered Yes. Is the percentage of women who answered Yes significantly higher (α = 5%)? A. No, accept the null, they’re the same. B. Yes, accept the null, the proportion is higher. C. No, reject the null, they’re the same. D. Yes, reject the null, the proportion is higher.

25. Question 11 On a Yes or No question, 65% of men (out of 40) answered Yes and 82% of women (out of 50) answered Yes. Is the percentage of women who answered Yes significantly higher (α = 5%)? A. No, accept the null, they’re the same. B. Yes, accept the null, the proportion is higher. C. No, reject the null, they’re the same. D. Yes, reject the null, the proportion is higher.

26. Daily Double! http://www.youtube.com/watch?v=E5LTzcDevrk You can bet your entire current score! Leading team tells bet first… If you are wrong, you lose the points. 4 questions remaining. Category It’s All Greek to Me

27. Question 12: Daily Double H 0 : μ 1 = μ 2 p-value = 17% H a : μ 1 ≠ μ 2 z stat = -1.37 α = ???z crit = ± 2.33 A. α = 1% B. α = 2% C. α = 5% D. α = 10%

28. Question 12 H 0 : μ 1 = μ 2 p-value = 17% H a : μ 1 ≠ μ 2 z stat = -1.37 α = ???z crit = ± 2.33 A. α = 1% B. α = 2% C. α = 5% D. α = 10%

29. Question 13 For an ANOVA test, which alternative hypothesis is not correct: A. Not all the means are the same. B. At least one mean is different. C. All the means are different. D. The means are not all the same.

30. Question 13 For an ANOVA test, which alternative hypothesis is not correct: A. Not all the means are the same. B. At least one mean is different. C. All the means are different. D. The means are not all the same.

31. Question 14 H 0 : μ = 600p-value = ??? H a : μ > 600z stat = 2.65 α = 5%z crit = 1.65 A. p-value = 0% B. p-value = 0.4% C. p-value = 4% D. p-value = 5%

32. Question 14 H 0 : μ = 600p-value = ??? H a : μ > 600z stat = 2.65 α = 5%z crit = 1.65 A. p-value = 0% B. p-value = 0.4% C. p-value = 4% D. p-value = 5%

33. Question 15 Assume that p-value = 2.3 * 10 -8. Which statement is true? A. The null hypothesis is absolutely false. B. The null hypothesis is very, very likely false. C. The null hypothesis is very, very likely true. D. The null hypothesis is absolutely true.

34. Question 15 Assume that p-value = 2.3 * 10 -8. Which statement is true? A. The null hypothesis is absolutely false. B. The null hypothesis is very, very likely false. C. The null hypothesis is very, very likely true. D. The null hypothesis is absolutely true.