a)​(c) For each of the accompanying​ scenarios, figure the estimated effect size​ (and whether it is approximately​ small, medium, or large by​ Cohen's conventions, using midpoints between conventions as thresholds separating small and large from​ medium). In each​ case, assume differences are calculated by subtracting values for Sample 2 from values for Sample 1. ​(d) Explain your answer for scenario​ (a) to a person who understands the t test for independent means but is unfamiliar with effect size.

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