Q7: A researcher wanted to see if a drug enhanced exercise performance. They had participants run 10 miles on day 1, gave them the drug, then had them run another 10 miles on day 2. Which problem might this study have? a. carryover effects b. unequal sample sizes c. heterogeneity of variance d. irrelevant matching criteria e. none of the above Q8: The larger the effect I am looking for, the smaller my sample size needs to be: a. True b. False Q9: If I wanted to know the number of subjects I need to have an 80% likelihood of rejecting the null, given an effect size of 0.5 at alpha = .01, I would need to do what kind of power analysis: a. Post Hoc b. A Priori