Stats For Behav. Science W/mindtap
Stats For Behav. Science W/mindtap
10th Edition
ISBN: 9781337367691
Author: GRAVETTER
Publisher: Cengage
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Chapter 11, Problem 17P

a. A repeated-measures study with a sample of n = 16 participants produces a mean difference of M d = 3 with a standard deviation of s = 4 . Use a two-tailed hypothesis test with α = .05 to determine whether this sample provides evidence of a significant treatment effect.

b. Now assume that the sample standard deviation is s = 12 and repeat the hypothesis test.

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

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