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T. {4 pts) A sample of n = 25 is selected Earn a population with u = 40, and a treatment is administered to each

T. {4 pts) A sample of n = 25 is selected Earn a population with u = 40, and a treatment is administered to each individual in the sample. After treatment, the sample mean is M = 42 with a standard deviation of s = 9. A. CaICulate the effect size as measured by Cohen's d. B. (2 pts) This effect size is considered a. large b. medium e. small

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