Customers arrive at a store randomly, following a Poisson distribution at an average rate of 20 per hour. What is the probability of exactly 0, 1, 2, and 3 arrivals in a 15 minute period?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter12: Queueing Models
Section12.5: Analytic Steady-state Queueing Models
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Customers arrive at a store randomly, following a Poisson distribution at an average rate of 20 per hour.
What is the probability of exactly 0, 1, 2, and 3 arrivals in a 15 minute period?

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