Natural Resources Canada measures fuel efficiency and other characteristics of vehicles. The data file called canfuel gives data for 1045 modelyear 2018 conventional vehicles. Variables include city and highway fuel efficiency measured in miles per imperial gallon (MPGCity andMPGHwy).

Click to download the data in your preferred format. The dataset is not available in TI format due to the nature of thedata.

CSV Excel JMP Mac-Text Minitab PC-Text R SPSS CrunchIt!

Let's examine the relationship between the two measures of fuel efficiency in the data set, highway MPG and cityMPG.

(a) Use the city MPG to predict the highway MPG. Determine the equation of the leastsquares regression line. Give the slope and the intercept of theline.

(Use decimal notation. Give your answers to four decimalplaces.)

(b) Find the city MPG and the highway MPG for the Lexus RX 450h AWD. Use your equation to find the predicted highway MPG for thisvehicle.

(Use decimal notation. Give your answer to three decimalplaces.)

(c) Find theresidual.

(Use decimal notation. Give your answer to three decimalplaces.)

https://crunchit.macmillantech.com/psbe5e?dataset=ex02-62.txt Link for Data