A Bank Manager Estimates That an Average of Two Customers

question 150

Multiple Choice

A bank manager estimates that an average of two customers enters the tellers' queue every five minutes. Assume that the number of customers that enters the tellers' queue is Poisson distributed. 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

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