Which of the following are true for both a repeated-measures experiment and a matched-subjects experiment when used to compare two treatment conditions? Check all that apply. a. If the researcher has n number of participants to use in the experiment, then the degrees of freedom will be the same in a repeated-measures experiment or in a matched-subjects experiment. b. They both use the same t statistic. c. The researcher must compute a pooled variance to compute a t statistic. d. Participants in both types of experiments are all measured the same number of times. For a repeated-measures experiment comparing two treatment conditions, the t statistic has a df of 11.How many subjects participated in this study? 24 12 11 22 A matched-subjects experiment produced a t statistic with a df of 9. How many subjects participated in this study? 10 18 9 20