a. A repeated-measures and an independent-measures study both produce a t statistic with df = 20. How many subjects participated in each experiment? b. A sample of n = 16 individuals participates in a...

a. A repeated-measures and an independent-measures study both produce a t statistic with df = 20. How many subjects participated in each experiment?

b. A sample of n = 16 individuals participates in a repeated-measures study that produces a sample mean difference of M_D
5 6.45 with SS = 960 for the difference scores.

1. a. Calculate the standard deviation for the sample of difference scores. Briefly explain what is measured by the standard deviation.

2. Calculate the estimated standard error for the sample mean difference. Briefly explain what is measured by the estimated standard error.