(a) (10 Points) The McCormick Hardware Store places one order for riding lawn mowers each February. The lawn mowers being purchased this year cost $300 and sell for $425. In the past, McCormick has always been able to sell all its surplus mowers during the September "end-of-summer" sale. The sales price for any surplus mowers this year is $250. If the following probability distribution for demand is assumed, how many mowers should be ordered? b) (10 points) What is McCormick's expected profit if they order 4 mowers