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For an independent-measures research study, the data show an 8-point difference (M1-M2) between the two treatment means and a pooled variance of s p =

For an independent-measures research study, the data show an 8-point difference (M1-M2) between the two treatment means and a pooled variance of s p = 4. Given this information, what is the value of Cohen's d? Oa. 8/2 Ob. 8/4 Oc. 8/1 Od.4/8

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