A sample of difference scores from a repeated measures experiment has a mean of M D = 3 with a standard deviation of s = 4. a. If n = 4, is this sample sufficient to reject the null hypothesis using a...

A sample of difference scores from a repeated measures experiment has a mean of M_D
= 3 with a standard deviation of s = 4.

a. If n = 4, is this sample sufficient to reject the null hypothesis using a two-tailed test with a = .05?

b. Would you reject H₀
if n = 16? Again, assume a two-tailed test with a = .05.

c. Explain how the size of the sample influences the likelihood of finding a significant mean difference.