Question: The following data are from a repeated-measures study examining the effect of a treatment by measuring a group of n = 11 participants before and

The following data are from a repeated-measures study examining the effect of a treatment by measuring a group of n = 11 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 α = .05, two tails.

Participant A B C D E F G H I J K

Participant A B C D E F G H I J K Before Treatment 66 50 38 58 50 34 44 42 62 50 56 After Treatment 84 44 52 56 52 42 51 49 67 57 62

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