Answer based on R language

We consider the Auto dataset that comes with the ISLR package in R. Load the data set with the command > df = ISLR:: Auto If you do not have the ISLR package installed, please use this line to do so > install.packages ("ISLR") Construct a linear regression model for mpg (miles per gallon) depending on year and origin. The variable origin is encoded as follows Value Origin 1 America 2 Europe 3 Japan What is the average difference in mpg for Japanese cars w.r.t. American cars according to this model? Round your result on two digits. (Hint: Make sure that the variable origin is encoded correctly by using the as.factor-command). Answer: We consider the Auto dataset that comes with the ISLR package in R. Load the data set with the command > df = ISLR:: Auto If you do not have the ISLR package installed, please use this line to do so > install.packages ("ISLR") Construct a linear regression model for mpg (miles per gallon) depending on year and origin. The variable origin is encoded as follows Value Origin 1 America 2 Europe 3 Japan What is the average difference in mpg for Japanese cars w.r.t. American cars according to this model? Round your result on two digits. (Hint: Make sure that the variable origin is encoded correctly by using the as.factor-command)