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Question: a random sample is obtained from a population with a...

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A random sample is obtained from a population with a mean of μ = 100, and a treatment is administered to the sample. After treatment, the sample mean is found to be M = 104 and the sample variance is s2 = 400.

(a) Assuming the sample contained n = 16 individuals, measure the size of the treatment effect by computing the estimated d and r2. (Use 3 decimal places.)

d =
r2 =


(b) Assuming the sample contained n = 25 individuals, measure the size of the treatment effect by computing the estimated d and r2. (Use 3 decimal places.)

d =
r2 =
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