(a) (5 points) Sketch the tree corresponding to the partition of the predictor space illustrated in the left-hand panel of the Figure. The numbers inside the boxes indicate the mean of Y within each region. (b) (5 points) Create a diagram similar to the left-hand panel of the figure, using the tree illustrated in the right-hand panel of the same figure. You should divide up the predictor space into the correct regions, and indicate the mean for each region. X1<1 X2<1 XI<3 -1.5 0.85 XP<0 3.4 0 1 2 3 4 5 6 7 8 -1.1 0.5 X1
