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wrote...
Posts: 210
2 weeks ago
Gas mileage An important factor in the amount of gasoline a car uses is the size of the engine. Called "displacement", engine size measures the volume of the cylinders in cubic inches. The regression analysis is shown.


a. How many cars were included in this analysis?
b. What is the correlation between engine size and fuel economy?
c. A car you are thinking of buying is available with two different size engines, 190 cubic inches or 240 cubic inches. How much difference might this make in your gas mileage? (Show your work.)
Textbook 

Stats: Modeling the World


Edition: 4th
Authors:
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wrote...
Posts: 242
2 weeks ago
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a. 89
b. -0.78
c. 3.3 mpg
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