Bundle: Statistics for Business & Economics, Loose-Leaf Version, 13th + MindTap Business Statistics with XLSTAT, 1 term (6 months) Printed Access Card
13th Edition
ISBN: 9781337148092
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Chapter 12.1, Problem 5E
Kate Sanders, a researcher in the department of biology at IPFW university, studied the effect of agriculture contaminants on the stream fish population in Northeastern Indiana (April 2012). Specially designed traps collected samples of fish at each of four stream locations. a research question was, Did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender? Observed frequencies were as follows.
Stream Location
| Gender | A | B | C | D |
| Male | 49 | 44 | 49 | 39 |
| Female | 41 | 46 | 36 | 44 |
- a. focusing on the proportion of male fish at each location, test the hypothesis that the population proportions are equal for all four locations. use a .05 level of significance. What is the p-value and what is your conclusion?
- b. Does it appear that differences in agricultural contaminants found at the four locations altered the fish population by gender?
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Chapter 12 Solutions
Bundle: Statistics for Business & Economics, Loose-Leaf Version, 13th + MindTap Business Statistics with XLSTAT, 1 term (6 months) Printed Access Card
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