An engineer wants to determine how the weight of a gas-powered car, x, affects gas mileage, y. The accompanying data represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. Complete parts (a) through (d) below. Click here to view the weight and gas mileage data. (a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable. (Round the x coefficient to five decimal places as needed. Round the cons Car Weight and MPG Weight (pounds), x Miles per Gallon, y 3707 18 3791 17 2725 25 3617 19 3328 21 2976 24 3709 17 2621 24 3454 20 3854 18 -

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