For a single server, single queue system with an arrival rate of 12 customers per hour and a service rate of 20 customers per hour, what is the mean server utilization (to two decimal places)?
A) 1.67
B) 0.60
C) 8.00
D) Cannot be determined from the information given

Question

Quizplus · Accepted Answer

The mean server utilization is equal to the arrival rate divided by the service rate. 
Mean server utilization = 12/20 = 0.6. Therefore, the answer is B.

For a Single Server, Single Queue System with an Arrival