Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

6th Edition

ISBN: 9781337115186

Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran

Publisher: Cengage Learning

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Textbook Question

Chapter 12.1, Problem 1E

Test the following hypotheses by using the χ² goodness of fit test.

H₀: p_A = .40, p_B = .40, and p_C = .20

H_a: The population proportions are not

p_A = .40, p_B = .40, and p_C = .20

A sample of size 200 yielded 60 in category A, 120 in category B, and 20 in category C. Use α = .01 and test to see whether the proportions are as stated in H₀.

a. Use the p-value approach.
b. Repeat the test using the critical value approach.

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Chapter 11, Problem 2CP

Chapter 12.1, Problem 2E

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Chapter 12 Solutions

Modern Business Statistics with Microsoft Office Excel (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)

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Solution Summary: The author states the test hypotheses for a 200-sample sample. The expected frequency for categories A, B, and C is the same.

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