Essentials of Statistics for the Behavioral Sciences
8th Edition
ISBN: 9781133956570
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Textbook Question
Chapter 15, Problem 6P
Suppose that the researcher from the previous problem repealed the study of named couples’ initials using twice as many participants and obtaining observed frequencies that exactly double the original values.
The resulting data are as follows:
| Same Initial | Different Initials | |
| 18 | 362 | 400 |
- a. Use a chi-square test to determine whether the number of couples with the same last initial is significantly different than would be expected if couples were Hatched randomly. Test with α = .05.
- b. You should find that the data lead lo rejecting the null hypothesis. However, in problem 5 the decision was fail to reject. How do you explain the fact that the two samples have the same proportions but lead to different conclusions?
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Chapter 15 Solutions
Essentials of Statistics for the Behavioral Sciences
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Ch. 15 - Research has demonstrated that people tend to be...Ch. 15 - Suppose that the researcher from the previous...Ch. 15 - Prob. 7PCh. 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 - Prob. 13PCh. 15 - Prob. 14PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 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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