Exhibit 5-15

Multiple Choice

Exhibit 5-15.A bank manager estimates that an average of two customers enter the tellers' queue every five minutes.Assume that the number of customers that enter the tellers' queue is Poisson-distributed. Refer to Exhibit 5-15.What is the probability that at least two customers enter the queue in a randomly selected five-minute period?

A) 0.1353
B) 0.2707
C) 0.4060
D) 0.5940