Question:-
Customers arrive at a counter randomly at the rate of 6 customers per hour. The service is provided at the counter by a server. The mean time of the service is 4 minutes per customer. The services are exponentially distributed. What is the probability that a newly arrived customer has to wait?
Option (A)
0.40
Option (B)
0.6
Option(C)
0.66
Option(D)
0.8
Correct Option:
(A)
Question Solution:
l = 6 Customer/hour
m = 60/4 = 15 Customer / hour
Probability to wait = 6/15 = 0.4
question-answer-faq-8837