using the libaray(ILSR)'s data(Carseats) in R,please help with the question below:

This question should be answered using the Carseats data set. Use your training data set for tting the model. a. Fitamultiple regression model to predict Sales using Price, Urban, and US . Your code here . Your answer 1 discussion I interpretation here. D. Provide an interpretation of each coefficient in the model. Be carefulsome of the variables in the model are qualitative! Your code here . Your answer 1 discussion I interpretation here. c. Write out the model in equation form, being careful to handle the qualitative variables property. Your code here . Your answer 1 discussion I interpretation here. d. For which of the predictors can you reject the null hypothesis H0 : ,6}- = D ? Your code here . Your answer 1 discussion I interpretation here. e. On the basis of your response to the previous question, lit a smaller model that only uses the predictors for which there is evidence of association with the outcome. Your code here . Your answer 1 discussion ! interpretation here. f. How well do the models in (a) and (9) t the data? Your code here . Your answer 1 discussion I interpretation here. g. Using the model from (e), obtain 95% confidence intervals for the ccefcient(s). Your code here . Your answer 1 discussion I interpretation here. h. Compute the training MSE and the testing MSE. Your code here . Your answer 1' discussion I interpretation here