2) Of those mountain climbers who attempt to climb Mt. McKinley, only about 63% of them reach the summit. In a random sample of 17 mountain climbers who are going to attempt to climb Mt. McKinley, what is the probability of each of the following? [3pts. each] a) all 17 reach the summit? b) Exactly 10 reach the summit? c) at most 6 reach the summit? d) more than 7 reach the summit?.