Question: If the null hypothesis states that the Expected Mean, mu of m = 52 and a researcher obtains a sample with M = 58 and

If the null hypothesis states that the Expected Mean, mu of m = 52 and a researcher obtains a sample with M = 58 and s2 = 25, then Cohen's d = _____.

a. 1.59

b. 1.20

c. 2.12

d. .24

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