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Mathematics, 18.06.2020 02:57 djdkfkfkckmfmf9919
A student studying statistics examined whether a relationship exists between the city miles per gallon (mpg) and highway miles per gallon (mpg) for cars and trucks. The miles per gallon of a vehicle describe the typical number of miles the vehicle can drive on one gallon of gas. Using a random sample of 50 cars and trucks, the student obtained the least- squares regression equation:
predicted highway mpg= 1.14- (city mpg)+5.8
Which statement below accurately describes the meaning of the number 1.14 in the regression equation?
a. If a vehicle's city mpg increases by 1 mile per gallon, its predicted highway mpg will decrease by 1.14 miles per gallon.
b. If a vehicle's city mpg increases by 1.14 mile per gallon, its predicted highway mpg will increase by 5.8 miles per gallon.
c. If a vehicle's city mpg increases by 1 mile per gallon, its predicted highway miles per gallon will increase by 1.14 miles per gallon.
d. If a vehicle's city mpg increases by 1.14 mile per gallon, its predicted highway mpg will increase by 1 mile per gallon.
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