In: Operations Management
PL RATE
After adding the second teller, now this is the problem of the Multi-Server Queuing Model.
Given Information:
The arrival rate of the customer (ʎ) = 11 people per hour
The Service rate of the customer (µ) = 12 people per hour
Number of tellers (s) = 2
A. The average Teller Utilization:
. The average number of customers in the line
The average time a customer waits before seeing the teller
The average time a customer spends in the service system
The average waiting time of a customer in the line when 2 tellers are used:
The average waiting time of a customer in the line when one teller is used:
Since the waiting time for the customer when one teller is used is much more than in 2 teller systems. Also, the system has some idle time which can be used when there will be high traffic.
Therefore, to improve customer satisfaction, it will be worth to add the second teller.