Introduction To Statistics And Data Analysis
Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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2-Proportion Test
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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Chapter 12.2, Problem 15E

A random sample of 1000 registered voters in a certain county is selected, and each voter is categorized with respect to both educational level (four categories) and preferred candidate in an upcoming election for county supervisor (five possibilities). The hypothesis of interest is that educational level and preferred candidate are independent.

  1. a. If X2 = 7.2, what is the conclusion at significance level 0.10?
  2. b. If there were only four candidates running for election, what would the conclusion be if X2 = 14.5 and α = 0.05?
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Chapter 12 Solutions

Introduction To Statistics And Data Analysis

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