The arrival rate of customers at a service window of a cinema hall follows a probability distribution with a mean rate of 45 per hour. If the service rate of the clerk follows poisson distribution, with a mean of 60 per hours, what is the probability of having no customer in the system?
A. 0.75
B. 0.6
C. 0.25
D. 0.45
Answer: Option C
This Question Belongs to Management >> Operations Research
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