Question: To evaluate the effect of a treatment, a sample is obtained from a population with a mean of = 30, and the treatment is

To evaluate the effect of a treatment, a sample is obtained from a population with a mean of µ = 30, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be µ = 31.3 with a standard deviation of s = 3.
a. If the sample consists of n = 16 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with a = .05?
b. If the sample consists of n = 36 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with a = .05?
c. Comparing your answer for parts a and b, how does the size of the sample influence the outcome of a hypothesis test?

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a With n 16 s M 075 and t 13075 173 This is not greater than the critical value of 21... View full answer

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