A treatment is administered to a sample of n = 9 individuals selected from a population with a mean of µ = 80 and a standard deviation of ? = 12 . After treatment, the effect size is measured by computing Cohen's d, and a value of d = 0.50 is obtained. Based on this information, what is the mean for the treated sample?
a. M = 6
b. M = 82
c. M = 86
d. Cannot answer without knowing the sample size
C
Psychology
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Answer the following statement true (T) or false (F)
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