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[See Solution] (a) To attain power =0.75 with an effect size that equals 0.3, how many participants are required in each group of a two-group experiment (use

Question: (a) To attain power \(=0.75\) with an effect size that equals 0.3, how many participants are required in each group of a two-group experiment (use \(\alpha=0.05\), two-tailed)? The required number of participants in each group is

(b) How many participants are required in each group to attain power \(=0.9\) (all else the same as in part a)? The required number of participants in each group is

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