Consider the lengths of stay at a hospital's emergency department. Hours Count Percent 10 1.99 47 9.36 3 89 17.73 4 119 23.71 80 15.94 60 11.95 7. 38 7.57 13 2.59 16 3.19 10 11 2.19 15 19 3.78 Assume that 5 persons independently arrive for service. Round your answers to four decimal places (eg. 98.7654). (a) What is the probability that the length of stay of exactly 1 person is less than or equal to 4 hours? (b) What is the probability that exactly 2 people wait more than 4 hours? (c) What is the probability that at least 1 person waits more than 4 hours?

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