Consider these data X1 4 3 5 7 Y 6 2 4 11 (a) Fit the data in R and summarize the results. (b) Compute X X and (X X)-1 and then compute B (using formula B = (X X) -1XTY) and confirm that you get the same answer as you got from R using function Im. (c) Compute 62 = SSRes n - 2 (d) Compute Var(B) = Var ( BolX ) Cov ( Bo , Bil X ) = 02 (X X)-1 Cov( B1, BolX) Var(BilX) using your calculations. (e) Compute ese(Bo) and ese(B1)