8th Edition

ISBN: 8220106798706

Author: BRASE

Publisher: Cengage Learning US

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Textbook Question

Chapter 8.3, Problem 21P

Lifestyle: Smoking In a survey of 1000 large corporations, 250 said that, given a choice between a job candidate who smokes and an equally qualified nonsmoker, the nonsmoker would get the job (USA Today).

(a) Let p represent the proportion of all corporations preferring a nonsmoking candidate. Find a point estimate for p.

(b) Find a 0.95 confidence interval for p.

(c)Interpretation As a news writer, how would you report the survey results regarding the proportion of corporations that hire the equally qualified non- smoker? What is the margin of error based on a 95 % confidence interval?

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Chapter 8 Solutions

EBK UNDERSTANDING BASIC STATISTICS

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Solution Summary: The author explains that the point estimate for p is 0.25, and the 95% confidence interval is (0.22, 0.28).

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Chapter 8 Solutions