## Question

# Consider a post office with two employees and a single waiting line. On average, the inter-arrival time is 6 minutes. Standard deviation of inter-arrival time

What is the average number of customers in the system?

What is the average number of customers waiting?

What is the average time a customer waits for service?

What is the average time a customer spends in the system?

What is the system utilization

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### Introduction to Management Science

**Authors:** Bernard W. Taylor

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