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City Mileage Highway Mileage We expect a car s highway gas mileage to be related...

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City Mileage Highway Mileage We expect a car s highway gas mileage to be related to its city gas mileage in mpg Data for all 1209 vehicles in the government s 2016 Fuel Economy Guide give the regression line highway mpg 7 903 0 993 X city mpg 201 for predicting highway mileage from city mileage a What is the slope of this line Say in words what the numerical value of the slope tells you b What is the intercept Explain why the value of the intercept is not statisti cally meaningful MOSCO c Find the predicted highway mileage for a car that gets 16 mpg in the city Do the same for a car with city mileage of 28 mpg d Draw a graph of the regression line for city mileages between 10 and 50 mpg

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