A repeated-measures study with 5 participants produced the data below. What is the estimated Cohen's d? Timepoint 1 Timepoint 2 1 5 4 9 5 7 6 10 4 9 1.6 5.66 3.27 2Suppose you conduct a two-tailed dependent-samples t-test at the a = .05 level. The sample variance is 20, and you find a critical t-value of 2.131. What is the estimated standard error for the sample mean difference? Choose the closest answer. In a repeated-measures study design, the sum of the difference scores is 20, the sample variance is 5, and 55 = 100. What is the mean of the difference scores, MD? Choose the closest