A treatment is administered to a sample of n = 9 individuals selected from a population with a mean of LaTeX: / muμ = 80 and a standard deviation of LaTeX: / sigmaσ = 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? Group of answer choices
M=6
M=19
M=8
none of above
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