Question $2$: In the following marketing set, we have $9$ years with the sales in $10$ million

euro and the advertising expenditure in million euro.

a$)$ Based on the $9$ observation and perform a ridge regression. Program it with R$.$ Output

the ridge regression results at a few different values of $.$

b$)$ In your ridge regression, when $$ increaes, what do you observe from the values of

the estimated coefficients. Does any of the estimated coefficients shrink to zero like the $L_1$

LASSO regression? Describe the difference between the output of a ridge regression and the

output of a lasso regression.