Essentials Of Statistics For Business & Economics
Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Chapter 12.3, Problem 19E

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

H0: pA = .40, pB = .40, and pC = .20

Ha: The population proportions are not

pA = .40, pB = .40, and pC = .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.

  1. a. Use the p-value approach.
  2. b. Repeat the test using the critical value approach.
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Chapter 12 Solutions

Essentials Of Statistics For Business & Economics

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