engineering recuitment BHEL Engineer Trainee Mock Test 2025 Industrial Engineering Operations Research Queueing Theory
If the arrivals at a service facility are distributed as per the Poisson distribution with a mean rate of 10 per hour and the services are exponentially distributed with a mean service time of 4 minutes, what is the probability that a customer may have to wait to be served?
1
0.40
2
0.50
3
0.67
4
1.00