a. Explain the difference between a matched-subjects design and a repeated-measures design. b. A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic with...

a. Explain the difference between a matched-subjects design and a repeated-measures design.

b. A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic with df = 16. How many participants were used in each study?