Question

At the Fidelity Credit Union, a mean of 44 customers arrive hourly at the drive-through window. What is the probability that, in any hour, less than 11 customer will arrive? Round your answer to four decimal places.

Answer 1

Let X is a random variable shows the number of cusotmer arrive in 1 hour. Here X has Poisson distribution with parameter . The probability that, in any hour, less than 11 customer will arrive is

Answer: 0.0000

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Note: I think 4 and 1 repeated in question. If that is the case then following is the solution:

Let X is a random variable shows the number of cusotmer arrive in 1 hour. Here X has Poisson distribution with parameter . The probability that, in any hour, less than 1 customer will arrive is

Answer: 0.0183