Over a period of time, the County Bank branch office from Example 14.3 has been experiencing a steady increase in the customer arrival rate. This rate has increased from the previous value of 150...

Over a period of time, the County Bank branch office from Example 14.3 has been experiencing a steady increase in the customer arrival rate. This rate has increased from the previous value of 150 customers per hour to 160, then to 170, and it is still increasing. During this time, the number of tellers has remained constant at six, and the mean service time per teller has remained constant at 2 minutes. The bank manager has seen an obvious increase in bank congestion. Is this reinforced by the M/M/s model? What will happen if the arrival rate continues to increase?

Objective To see what happens to congestion in a multiple-server system when the traffic intensity gets close to 1.