A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while

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A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while driving (The Wall Street Journal, May 5, 2010). Suppose this study was based on a random sample of 50 teen drivers.

a. Construct the 99% confidence interval for the proportion of all teenagers that have used cell phones while driving.

b. What is the margin of error with 99% confidence?

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Essentials Of Business Statistics Communicating With Numbers

ISBN: 9780078020544

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Authors: Sanjiv Jaggia, Alison Kelly

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Question Posted: Jan 28, 2015 10:08 AM

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A recent study by Allstate Insurance Co. finds that 82% of teenagers have used cell phones while

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Essentials Of Business Statistics Communicating With Numbers

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