Elementary Statistics 2nd Edition
Elementary Statistics 2nd Edition
2nd Edition
ISBN: 9781259724275
Author: William Navidi, Barry Monk
Publisher: McGraw-Hill Education
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Chapter 11.2, Problem 7E

In a test for the difference between two proportions, the sample sizes were n 1 = 120 and n 2 = 85 , and the numbers of events were x 1 = 55 and x 1 = 45 . A test is made of the hypotheses H 0 : p 1 = p 2 versus H 1 : p 1 p 2 .

  1. Compute the value of the test statistic.
  2. Can you reject H 0 at the α = 0.05 level of significance?
  3. Can you reject H 0 at the α = 0.01 level of significance?

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Chapter 11 Solutions

Elementary Statistics 2nd Edition

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