3rd Edition

ISBN: 9780135163146

Author: Gould

Publisher: PEARSON

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In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Textbook Question

Chapter 9, Problem 24SE

Random Numbers If you take samples of 40 lines from a random number table and find that the confidence interval for the proportion of odd-numbered digits captures 50 % 37 times out of the 40 lines, is it the confidence interval or confidence level you are estimating with the 37 out of 40?

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Chapter 9, Problem 23SE

Chapter 9, Problem 25SE

Chapter 9 Solutions

INTRODUCTORY STATISTICS (LOOSELEAF)

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Random Numbers If you take samples of 40 lines from a random number table and find that the confidence interval for the proportion of odd-numbered digits captures 50 % 37 times out of the 40 lines, is it the confidence interval or confidence level you are estimating with the 37 out of 40?

Solution Summary: The author explains that 37 out of 40 in the given sentence refers to a confidence level. The confidence interval for the proportion of odd number digits captures 0.50.

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Chapter 9 Solutions

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