2. Developmental psychologists study children at different ages. In this study, the children were tested three times, at ages 10, 11 and 12. At each age, they worked a set of 25 logic problems. The scores below represent percentage correct on the set of 25 problems. Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. Age Child 10 11 12 40 2 12 36 3 12 24 36 A 16 20 48 3. Drug testing often involves giving participants each of the several dosages as well as a placebo (an inert substance). In this study, the dependent variable was reaction time in hundredths of a second Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. Dosage Participant Placebo 15 mg 30 mg 60 mg 36 32 20 18 35 40 25 27 40 42 30 24 4. Drug testing often involves giving participants each of the several dosages as well as a placebo (an inert substance). In this study, the dependent variable was a test that measured willingness to take risks (large scores mean more willingness). Calculate a repeated-measures ANOVA, Tukey HSD tests, and write an interpretation. Dosage Participant Placebo 15 mg 30 mg 60 mg 10 40 31 50 N 24 48 36 36 32 50 62 55