A random sample of n = 16score is obtained from a population with a mean of µ = 80, and a treatment
Question: A random sample of n = 16score is obtained from a population with a mean of µ = 80, and a treatment is administered to the sample. After treatment, the sample mean is found to be M = 82.
a. Assuming the sample variance is s2 = 64, compute the estimated d and r2 to measure the size of the treatment effect.
b. Assuming the sample variance is s2 = 1600, compute the estimated d and r2 to measure the size of the treatment effect.
c. Comparing your answers from parts a and b, how does the sample variance influence measures of effect size?
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