An automobile manufacturer introduces a new model that averages 27 miles per gallon in the city. A

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An automobile manufacturer introduces a new model that averages 27 miles per gallon in the city. A person who plans to purchase one of these new cars wrote the manufacturer for the details of the tests, and found out that the standard deviation is 3 miles per gallon. Assume that in-city mileage is approximately normally distributed.

a. What is the probability that the person will purchase a car that averages less than 20 miles per gallon for in-city driving?

b. What is the probability that the person will purchase a car that averages between 25 and 29 miles per gallon for in-city driving?

Related Book For answer-question

Elementary Statistics

ISBN: 978-0538733502

11th edition

Authors: Robert R. Johnson, Patricia J. Kuby

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Posted Date: Apr 02, 2019 10:22 AM

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An automobile manufacturer introduces a new model that averages 27 miles per gallon in the city. A

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Elementary Statistics

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