# Wingard Credit Union is redesigning the entryway into its bank of ATM machines. Management is trying to

## Question:

Wingard Credit Union is redesigning the entryway into its bank of ATM machines. Management is trying to conceptually understand the interarrival of individuals, which has been described to them as following a Poisson distribution. If on an average, two customers arrive per minute randomly during busy times, calculate the probability that during a specific minute, no customers arrive. Calculate the probability that between one and four customers arrive.

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**Related Book For**

## Operations Management Processes and Supply Chains

**ISBN:** 978-0133872132

11th edition

**Authors:** Lee J. Krajewski, Manoj K. Malhotra, Larry P. Ritzman