6th Edition

ISBN: 8220100802713

Author: Briggs

Publisher: PEARSON

Concept explainers

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 6.D, Problem 7QQ

Consider a survey with a margin of error of 4%. If you want to reduce the margin of error to 2%, you should repeat the survey with

a. half as many people.

b. twice as many people.

c. four times as many people.

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Chapter 6.D, Problem 6QQ

Chapter 6.D, Problem 8QQ

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