statistics

1) A researcher is interested in whether or not students' short-term memory abilities are affected by sleep. She recruited four people to participate in her study. She administered a short-term recall test at time A, before the participants went to sleep. She then administered the same recall test to the same participants at time B. after the participants woke up. The data from her study are below. a. Do these data indicate any significant differences among between time A and time B? Test with a = .05. b. Is a post-hoc test necessary? If so, compute it. If not, explain why not. c. Compute n', the percentage of variance accounted for by the treatment. Treatment A B N = 8 G = 36 AANN EX = 192 T = 12 T= 24 SS =4 SS = 8