Repeated Measures/ Analysis of Variance (St. Johns Wort)

Question 1

Based on these results:

Answer 1

A. Aaron should accept the null hypothesis.
B. Aaron should reject the null hypothesis.
C. If Aaron proceeds and conducts follow-up t-tests, he is committing a Type I error.
D. If Aaron proceeds and conducts follow-up t-tests, he is committing a Type II error.
E. Both A and C**
F. Both B and D

Question 2

In repeated measures ANOVA total variance is reduced because___________.

Answer 2

A. the variance between measures is removed
B. the variance due to individuals is removed**
C. the repeated measures increases the explained variance
D. the total variance is partitioned into within and between variance

Question 3

Using repeated measures ANOVA,

Answer 3

A. mitigates carryover effects.
B. increases power.*****
C. decreases the likelihood of internal threats to validity.
D. controls for differential effects.