(10) 2. Below are some residual plots of n vs #, and normal probability plots of n for several models. For each of the four plots, write a sentence to indicate which, if any, of the usual assumptions for multiple regression seems to be violated. (a) Answer for plot 1 (upper left); (b) Answer for plot 2 (upper right); (c) Answer for plot 3 (lower left); (d) Answer for plot 4 (lower right). Normal Q-Q Plot residuals vs predicted : model 2 00 O O 1.0 O residuals of model 1 resid(fit2) -2000 0 2000 0.0 -3 -2 -1 0 1 2 3 -1000 1000 3000 Theoretical Quantiles predict(fit2) residuals vs predicted : model 3 Normal Q-Q Plot O O resid(fit3) residuals of model 3 CO Do000" 6.0 6.5 7.0 7.5 -2 -1 0 2 predict(fit3) Theoretical Quantiles