Suppose that a senator from the 109th u. s. congress is selected at random. let a-even the senator is under 50, b-event the senator is in his or her 50s, c senator is in his or her 60s, and s even the senator is under 70. event the a) use the table and the f/n rule to find p(s). b) express event s in terms of events a, b, and c c) determine p(a), p(b), and p(c) d) compute p(s), using the special addition rule and your answers from parts (b) and (c). compare your answer with that in part (a). e) use the complementation rule to find the probability that a randomly selected senator in the 109th congress is i. ii. 50 years old or older under 70 years old