NEEEED HELP

Pleasee!!!

a and b

THe minitab output is given how do oyu do the numbers

The MINITAB output after running a regression of Y on Xi and X2 is given below. The regression equation is Y = 39 . 2 + 4. 4. 44 X1 + 3.83 X2 Predictor Coef St Dev T P Constant 39 . 167 4. 735 8. 27 0 .000 X1 4 . 4375 0. 4972 8. 92 0.000 X2 3. 8333 0.8120 4. 72 0 . 001 S = 2.813 R-Sq = 91.9% R-Sq(adj) = 90.1% Analysis of Variance Source DF SS MS F Regression N 806. 46 403 .23 50 .96 Residual Error CO 71 . 21 7.91 Total 11 877 . 67 Source DF Seq SS X1 H 630 . 12 X2 176 . 33 Answer the following questions based on the above output. (a) Find joint confidence intervals for E{Yh} for Xhi = 8, Xh2 = 2 and for Xhi = 8, Xh2 = 4 with joint confidence coefficient=.90, using Bonferroni and Working -Hotelling ap- proaches. Which of these will be preferred. (b) If two new observations for Y obtained at the above two prescribed levels of X1 and X2 are 80 and 90. Would you have 90% confidence in claiming that these observations are generated from the first order model estimated in above. You can use the values of (X'X)-1 as given below: (X'x)-1 2.83333 -0.25000 -0.25000 -0.25000 0.03125 0.00000 -0.25000 0.00000 0.08333