Suppose that the number of calls per hour to an answering service follows a Poisson process with rate 10 per hour. Suppose that each call, independently, is made by a man with probability 2/3, and by a woman with probability 1/3, and the gender of the caller is independent of the time of the call. a) (2 points) What is the probability that in one hour exactly 4 men and exactly 2 women will call the answering service