A sample of difference scores from a repeated-measures experiment has a mean of M D = 4 with a standard deviation of s = 6. 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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Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570
BuyFind

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
Publisher: Cengage Learning
ISBN: 9781133956570

Solutions

Chapter 11, Problem 8P
Textbook Problem

A sample of difference scores from a repeated-measures experiment has a mean of MD = 4 with a standard deviation of s = 6.

  1. a. If n = 4, is this sample sufficient to reject the null hypothesis using a two-tailed test with α = .05?
  2. b. Would you reject H0 if n = 16? Again, assume a two-tailed test with α = .05.
  3. c. Explain how the size of the sample influences the likelihood of finding a significant mean difference.

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Essentials of Statistics for the Behavioral Sciences

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