Question
Suppose three ATMs are outside a bank, and customers arrive following a Poisson process with an average interarrival time of 2.5 minutes. Each ATM takes,
Suppose three ATMs are outside a bank, and customers arrive following a Poisson process with an average interarrival time of 2.5 minutes. Each ATM takes, on average, 4.5 minutes to serve a customer, and the processing time follows an exponential distribution. What is the average wait time for a customer to use an ATM?
| 0.82 | ||
| 1.47 | ||
| 4.85 | ||
| 2.91 |
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Exploring The Hospitality Industry
Authors: John R Walker
4th Edition
0134744934, 9780134744933
