Compute an effect size:

Sample size for treatment group = 51 Sample size for control group = 51

Treatment Group Mean = 78 Treatment Group standard deviation = 2.00

Control Group Mean = 75 Control Group standard deviation = 3.24

ES = experimental group mean - control group mean

Control group's standard deviation

a. .9259 ( moderate - strong effect)

b. .8436 (moderate effect)

c. 4.82 (strong effect)

d. 1.62 (moderate effect)

e. Insufficient information (question can not be answer)