MYSTATLAB W/ETEXT ELEM. STATS CA ED>I<
3rd Edition
ISBN: 9781323617144
Author: Triola
Publisher: PEARSON
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Textbook Question
Chapter 10.4, Problem 9BSC
City Fuel Consumption: Finding the Best Multiple Regression Equation. In Exercises 9-12, refer to the accompanying table, which was obtained using the data from 21 cars listed in Data Set 20 “Car Measurements" in Appendix B. The response (y) variable is CITY (fuel consumption in mi/gal). The predictor (x) variables are WT (weight in pounds), DISP (engine displacement in liters), and HWY (highway fuel consumption in mi/gal).
9. If only one predictor (x) variable is used to predict the city fuel consumption, which single variable is best? Why?
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The following regression equation was fit to these data:
Qi = b0 + b1Pi + b2Pxi + b3Adi + b4Ii + uit.
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P is the average price per meal (customer ticket amount, in dollars),
Px is the average price charged by competitors (in dollars),
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Where: Q is the number of meals served,
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I is the average income per household in each outlet’s service area,
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Chapter 10 Solutions
MYSTATLAB W/ETEXT ELEM. STATS CA ED>I<
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