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Phone calls arrive at the reservation desk in a hotel. The arrival rate is constant throughout the day and the arrivals are independent of each other. The average arrival rate is 120 calls per hour. We are interested in the number of incoming calls over a one-minute time period. Using the Poisson probability distribution method compute the probability of receiving exactly 3 calls over a one-minute time period.
a. .20
b. .41
c. 1.41