Question: Gas mileage We expect a car's highway gas mileage to be related to its city gas mileage. Data for all 1198 vehicles in the government's recent Fuel Economy Guide give the regression line: predicted highway mpg = 4.62 + 1.109 (city mpg).
(a) What's the slope of this line? Interpret this value in context.
(b) What's the y intercept? Explain why the value of the intercept is not statistically meaningful.
(c) Find the predicted highway mileage for a car that gets 16 miles per gallon in the city.