The Mean and Variance of a Comparison Distribution That Would

Multiple Choice

The mean and variance of a comparison distribution that would be used to test the hypothesis that the mean obtained in a study involving 10 participants is different from a known population having a mean of μ = 100 and σ² = 25 would be

A) mean = 10,variance = 2.5
B) mean = 10,variance = 5
C) mean = 100,variance = 2.5
D) mean = 100,variance = 5