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StatisticsEssentials of Statistics for the Behavioral SciencesA 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.BuyFind*arrow_forward*

8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 15.2, Problem 3LC

Textbook Problem

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.

Essentials of Statistics for the Behavioral Sciences

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