1. The data set of Hitters is in the package \"ISLE.\" and has data on hitters from Major League Baseball, including statistics for 1986, their career, and their 1986 salaries. (a) Carry out the following regressions of salary vs. all of the other predictors that are numerical. Make a report on the various aspects of each of these regression models and provide informative summaries describing the results. 1. Ridge regression using GCV to pick regularization parameter. 2. Lasso regression using CV to pick regularization parameter t. (1)) Compare compare results of the Lasso regression model in (a) to standard least squares regression with variables selected by AIC. in particular compare the coefcients and sum inariae your ndings. Hint: You may nd the following code helpful to generate a nice data frame Hitters? with only the numerical data Hitters2 = Hitters[,-c(14,15,20)]