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 α = .05 ? b. Would you reject H 0 if n = 16 ? Again, assume a two-tailed test with α = .05 . c. Explain how the size of the sample influences the likelihood of finding a significant mean difference.

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Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781305504912
BuyFind

Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781305504912

Solutions

Chapter
Section
Chapter 11, Problem 19P
Textbook Problem

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 α = .05 ?

b. Would you reject H 0 if n = 16 ? Again, assume a two-tailed test with α = .05 .

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

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