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QUESTION 7 Benny's Barber Shop in Cleveland has five chairs for waiting customers. Previous records indicate that the probablety distribution for the number of customers waiting, Y, is as follows. Y 0 1 2 3 4 5 P(Y=y) 0.419 0.160 0.137 0.110 0.096 0.078 What is the probability that exactly four customers are waiting? What is the probability that more than four customers are waiting? What is the probability that at most four customers are waiting? What is the probability that at least four customers are waiting? Find P(1 s Y