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Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 49e
Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 49e

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# Solved: Guzzlers? Environmental Protection Agency (EPA)

ISBN: 9780321986498 70

## Solution for problem 49E Chapter 5

Stats: Data and Models | 4th Edition

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Problem 49E

Problem 49E

Guzzlers? Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean of 24.8 mpg and a standard deviation of 6.2 mpg for highway driving. Assume that a Normal model can be applied.

a) Draw the model for auto fuel economy. Clearly label it, showing what the 68–95–99.7 Rule predicts.

b) In what interval would you expect the central 68% of autos to be found?

c) About what percent of autos should get more than 31 mpg?

d) About what percent of cars should get between 31 and 37.2 mpg?

e) Describe the gas mileage of the worst 2.5% of all cars.

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SOCIAL & BEHAVIORAL SCIENCES ● Share a fundamental belief that understanding the organization and motivation behind social forces, along with a better understanding of the behavior of people, can be used to improve the lives of people, as well as society as a whole ● Examples of contributions ○ Psychology ■ Theories of the origins of behavior and risk- taking tendencies ■ Methods for altering individual and social behaviors ○ Sociology ■ Theories of social development, organizational behavior, and systems thinking

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