Basic Queueing - Conclusion Previous Next
The management of Best Bank emphasizes developing good customer relations by providing a high level of service, including keeping line lengths and waiting times relatively low. Therefore, management is concerned by the estimates provided by the simulation run with two tellers for three reasons.
  1. These estimates indicate that, on the average, customers will incur a significant wait before being served. 
  2. The actual line lengths and waiting times occasionally will be much larger than the average.
  3. The estimates are based on forecasts of what the arrival rate and service rate will be, and forecasts can be off in either direction. If the actual arrival rate turns out to be higher than predicted (or the service rate lower), then the situation will be even worse than estimated.
Based on these considerations, management has made three decisions.
  1. The bank will be built with four teller windows instead of two in order to allow for more future business than currently predicted. 
  2. Two tellers will be provided when the bank opens.
  3. If the amount of business grows to exceed the predicted long-run level (about one customer per minute), a third teller should be added.
The second simulation demo will continue this story after the bank opens. 
This concludes the demonstration. See the OR Tutor menu (to the left) for other demonstrations or close the browser window to exit OR Tutor.