Question: Using Cohen's d, state whether a 3-point treatment effect (M1 M2 = 3) is small, medium, or large for a two-independent-sample t test, given

Using Cohen's d, state whether a 3-point treatment effect (M1 − M2 = 3) is small, medium, or large for a two-independent-sample t test, given the following values for the pooled sample variance:
(a) s2p = 9
(b) s2p = 36
(c) s2p = 144
(d) s2p = 576

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