Question: A scatterplot and linear model comparing the highway mile- ages and city mileages of 1159 conventional cars (neither hybrid nor electric) are displayed in Fig.

A scatterplot and linear model comparing the highway mile- ages and city mileages of 1159 conventional cars (neither hybrid nor electric) are displayed in Fig. 98.

a. Use the linear model to predict the city mileage for a car with highway mileage 20 miles per gallon.
b. Use the linear model to predict the highway mileage for a car with city mileage 20 miles per gallon.
c. Use the linear model to predict the city mileage for a car with highway mileage 25 miles per gallon. Find the error in this prediction for the car(s) with highway mileage 25 miles per gallon and smallest city mileage.
d. Use the linear model to predict the city mileage for a car with highway mileage 40 miles per gallon. Find the error in this prediction for the car(s) with highway mileage 40 miles per gallon and largest city mileage.

Highway Mileage versus City Mileage 40 S 35 30 25 20 15 10 10 15 20 25 30 35 40 45 S Highway miles per gallon

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