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StatisticsEssentials of Statistics for the Behavioral SciencesA communications company has developed three new designs for a cell phone. To evaluate consumer response, a sample of 60 college students and 60 older adults is selected and each person is given all three phones to use for I week. At the end of the week, the participants must identify which of the three designs they prefer. The distribution of preference is as follows: Design 1 Design 2 Design 3 Student 27 20 13 60 Older Adult 21 34 5 60 48 54 18 a. Do the data indicate that the distribution of preferences for older adults is significantly different from the distribution for college students’ Test with α = .05. b. Compute the phi-coefficient to measure the strength of the relationship.BuyFind*arrow_forward*

8th Edition

Frederick J Gravetter + 1 other

Publisher: Cengage Learning

ISBN: 9781133956570

Chapter 15, Problem 4RE

Textbook Problem

A communications company has developed three new designs for a cell phone. To evaluate consumer response, a sample of 60 college students and 60 older adults is selected and each person is given all three phones to use for I week. At the end of the week, the participants must identify which of the three designs they prefer. The distribution of preference is as follows:

Design 1 | Design 2 | Design 3 | ||

Student | 27 | 20 | 13 | 60 |

Older Adult | 21 | 34 | 5 | 60 |

48 | 54 | 18 |

**a.**Do the data indicate that the distribution of preferences for older adults is significantly different from the distribution for college students’ Test with α = .05.**b.**Compute the phi-coefficient to measure the strength of the relationship.

Essentials of Statistics for the Behavioral Sciences

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Ch. 15.2 - For a chi-square test, the expected frequencies...Ch. 15.2 - For a chi-square test, the expected frequencies...Ch. 15.2 - A researcher has developed three different designs...Ch. 15.3 - A researcher would like to know which factors are...Ch. 15.5 - 1. A researcher completes a chi-square test for...Ch. 15.5 - Explain why a very small value for an expected...Ch. 15 - Parametric test (such as t or ANOVA) differ from...Ch. 15 - Gven, Elaimis, Binokay, and Tan (2003) studied the...Ch. 15 - In Chapter 9 (p. 257), we described a study...Ch. 15 - Data from the department of motor vehicles...

Ch. 15 - Research has demonstrated that people tend to be...Ch. 15 - Suppose that the researcher from the previous...Ch. 15 - A normal distribution is a common assumption...Ch. 15 - Automobile insurance is much more expensive for...Ch. 15 - The color red is often associated with anger and...Ch. 15 - Research suggests that romantic background music...Ch. 15 - Mulvihill, Obuseh and Caldwell (2008) conducted a...Ch. 15 - Research has demonstrated strong gender...Ch. 15 - Research indicates that playing a prosocial video...Ch. 15 - The data from problem 13 show no significant...Ch. 15 - Earlier in this chapter, we discussed a study...Ch. 15 - Research suggests that liberals and conservatives...Ch. 15 - Research results suggest that IQ scores for boys...Ch. 15 - Gender differences in dream content are well...Ch. 15 - In a study similar to one conducted by Fallon and...Ch. 15 - A recent study indicates that people tend to...Ch. 15 - Research indicates that people who volunteer to...Ch. 15 - Although the phenomenon is not well understood, it...Ch. 15 - For the following scores. X Y 7 6 9 6 6 3 12 5 9 6...Ch. 15 - For the following data: X Y 1 2 4 7 3 5 2 1 5 14 3...Ch. 15 - A developmental psychologist would like to...Ch. 15 - A communications company has developed three new...

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