Bundle: Cengage Advantage Books: Essentials of Statistics for the Behavioral Sciences, 8th + LMS Integrated for Aplia, 1 term Printed Access Card
8th Edition
ISBN: 9781305427204
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 15.2, Problem 3LC
A researcher has developed three different designs for a computer keyboard. A sample of n = 60 participants is obtained, and each individual tests all three keyboards and identifies his or her favorite. The frequency distribution of preferences is as follows:
| Design A | Design B | Design C | |
| 23 | 12 | 25 | n = 60 |
- a. What is the df value for the chi-square statistic?
- b. Assuming that the null hypothesis states that there are no preferences among the three designs, find the expected frequencies for the chi-square test.
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Chapter 15 Solutions
Bundle: Cengage Advantage Books: Essentials of Statistics for the Behavioral Sciences, 8th + LMS Integrated for Aplia, 1 term Printed Access Card
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