2-70. Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 100 disks are summarized as follows: Scratch Resistance Shock Resistance High Low High 70 9 Low 16 5 Let A denote the event that a disk has high shock resistance, and let B denote the event that a disk has high scratch resist- ance. If a disk is selected at random, determine the following probabilities: (a) P(A) (d) P(AB) (b) P(B) (e) P(AUB) (c) P(A') (f) P(AUB)