Dr. L read the journal article about an experiment conducted by Elliot and his colleagues (2007), and decided to test a hypothesis related to it.Elliot had found that participants who were exposed to red on their test booklet cover had significantly lower test scores than those exposed to green or black.Dr. L predicted that the test scores for participants who were exposed to red would be lower than scores of those who were exposed to pink.He recruited 32 undergraduate students, assigned 16 to the red condition and 16 to the pink condition, conducted a t-test, and calculated an F-ratio statistic of 2.10.

1.What is the critical value based on 32 participants, 2 groups, with a one-tailed alpha = .05?

2. Is the obtained F-statistic larger than the critical value?

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3. Are the results statistically significant?

4. What is the probability that Type I error occurred?

5. Are the results statistically significant using a one-tailed alpha = .01?

Next, Dr. L read a journal article by Barrick and Mount (1991), the results of which indicated that employees' personality self-report survey scores for the Big 5 personality dimension called conscientiousness were positively correlated with measures of their job performance.He was interested in testing whether conscientiousness scores would also be positively related to academic performance, operationalized as the number of points earned in PSYCH 301W.He recruited 19 students to participate in his study, measured their conscientiousness, and calculated a correlation of .45 between the conscientiousness scores and PSYCH 301W points earned.

6.What is the critical value based on 19 participants, with a one-tailed alpha = .05?

7. Is the obtained correlation larger than the critical value?

8. Are the results statistically significant?

9. What is the probability that Type I error occurred?

10. Would the correlation have been statistically significant if there were 14 participants?