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To evaluate the effect of a treatment, a sample of n = 8 is obtained...

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To evaluate the effect of a treatment, a sample of n = 8 is obtained from a population with a mean of = 50, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 55. a. Assuming that the sample variance is s = 32, use a two-tailed hypothesis test with ? = .05 to determine whether the treatment effect is significant and compute both Cohen's d and r^2 to measure effect size.

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