A Service Counter Employs Two Servers

Multiple Choice

A service counter employs two servers.On average,a server requires 8 minutes to process a customer and service times follow an exponential distribution.Customers arrive at the counter at the rate of 12 per hour according to a Poisson distribution.The probability that there are no customers in the system is

A) 0.800
B) 0.536
C) 0.369
D) 0.111