A forensic psychologist conducted a study to examine whether being hypnotized during recall improves how well a witness can remember facts about an event. Nine participants watched a short film of a mock robbery, after which each participant was questioned about what he or she had seen. The five participants in the experimental group were questioned while they were hypnotized and gave 16, 15, 19, 15, and 17 accurate responses. The four participants in the control group gave 10, 11, 14, and 12 accurate responses. Use the .05 significance level to determine if the hypnotized witnesses perform better than witnesses who are not hypnotized. Mexperimental = 16.4 Mcontrol = 11.75 SSexperimental = 11.2 SScontrol= 8.75 Mdifference = 7 SSdifference = 130 Difference = Experimental - Control

What is/are the cutoff(s)? +1.64 +1.860 +1.895 2.262 What is the sample score (i.e., the test statistic)? Show work a. 1.22 b. 4.11 c. 5.22 d. 17.95

Upload a sketch for this hypothesis test labeling: a) the cutoff(s) b) the rejection region(s) c) and the sample t-score What is your conclusion for this hypothesis test? a. reject the null b. accept the research hypothesis c. accept the null d. fail to reject the null

Explain how you came to your conclusion about the null.

Provide an interpretation of your findings and, if a t-test was conducted, style report of the statistics for this hypothesis test. An interpretation is a one sentence conclusion of the hypothesis test that should be free of statistical jargon.