The Insurance Institute for Highway Safety issued a press release titled Teen Drivers Often Ignoring Bans on
Question:
a. Construct and interpret a 95% confidence interval for the difference in the proportion using a cell phone while driving before the ban and the proportion after the ban.
b. Is zero included in the confidence interval of Part (c)? What does this imply about the difference in the population proportions?
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Related Book For
Statistics The Exploration & Analysis Of Data
ISBN: 9780840058010
7th Edition
Authors: Roxy Peck, Jay L. Devore
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