QTB – Nov 2014 – L1 – SA – Q8 – Queuing Models

Determines the average service time in a bank given the arrival rate and service time.

Question

Question: The mean arrival rate (µ) in a bank is observed to be one customer in every 4 minutes, and the mean service time is 2½ minutes per customer. The average time of service in the bank is:
A. 1.04 minutes
B. 1.67 minutes
C. 6.67 minutes
D. 6.76 minutes
E. 10.0 minutes

Answer

Explanation: The correct answer is C. The average time of service (W) is calculated by using queuing models, which involve the arrival rate and the service time. Given the arrival rate of one customer every 4 minutes and a service time of 2½ minutes, the average service time is 6.67 minutes.

Tags: Arrival Rate, Queuing Theory, Service Time
Level: Level 1

Topic: Queuing Models
Series: NOV 2014

Uploader: Dotse