Customers Arrive at a Ticket Counter at the Rate of 50

Multiple Choice

Customers arrive at a ticket counter at the rate of 50 customers per hour, according to a Poisson distribution. There are three ticket agents. Customers select the first available agent from one line. Each agent can process 20 customers per hour with exponential service times.
-Use the information in Scenario C.4.What is the average utilization of the three-agent system?

A) Less than or equal to 80 percent
B) Greater than 80 percent but less than or equal to 85 percent
C) Greater than 85 percent but less than or equal to 90 percent
D) Greater than 90 percent