Chapter 11, Problem 7P

The following data are from a repeated-measures study examining the effect of a treatment by measuring a group of $n=6$participants before and after they receive the treatment.

a. Calculate the difference scores and $M_d$.

b. Compute SS. sample variance, and estimated standard error.

c. Is there a significant treatment effect? Use $\alpha =.05$, two tails.

Participant	Before Treatment	After Treatment
A	7	8
B	2	9
C	4	6
D	5	7
E	5	6
F	3	8