Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Textbook Question
Chapter 13.1, Problem 5E
A sample of small cars was selected, and the values of x = horsepower and y = fuel efficiency (mpg) were determined for each car. Fitting the simple linear regression model gave the estimated regression equation ŷ = 44.0 − 0.150x.
- a. How would b = −0.150 be interpreted?
- b. Substituting x = 100 gives ŷ = 29.0. Give two different interpretations of this number.
- c. What happens if the efficiency for a car with a 300-horsepower engine is predicted? Why does this occur?
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Chapter 13 Solutions
Introduction To Statistics And Data Analysis
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