The National Highway Traffic Safety Administration requires each U.S. state to carry out an observational study to

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The National Highway Traffic Safety Administration requires each U.S. state to carry out an observational study to assess the level of seat belt use in the state. The report ?2015 Utah Seat Belt Use Survey? (Utah Department of Public Safety, September 14, 2015) summarized data from the study done in Utah. The proportions in the accompanying table are based on observations of over 25,000 drivers and passengers.

Assume that these proportions are representative of adults in Utah and that an adult from Utah is selected at random.

a. What is the probability that the selected adult uses a seat belt?

b. What is the probability that the selected adult uses a seat belt given that the individual selected is male?

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Introduction To Statistics And Data Analysis

ISBN: 9781337793612

6th Edition

Authors: Roxy Peck, Chris Olsen, Tom Short

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Question Posted: Feb 20, 2020 06:30 AM

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The National Highway Traffic Safety Administration requires each U.S. state to carry out an observational study to

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Does Not Use Seat Belt 0.077 0.048 Uses Seatbelt Male 0.423 0.452 Female

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Introduction To Statistics And Data Analysis

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