# Answer to Question #84122 in Mechanical Engineering for Subash

Question #84122

The arrival rate of customer at a banking counter follows a ppoisson distribution with a mean of 30 per hours.The service rate of the counter clerk also follows poisons distribution with mean of 45 per hour.1)What is the probability of having zero customer in the system.2)What is the probability of having 8 customer in the system.3)What is the probability of having 12 customers in the system

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