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n a barber the rate for the number of the customers is 3 per hours. On...

  1. n a barber the rate for the number of the customers is 3 per hours. On an average the barber can serve customers at rate of one every 15 minutes.

A)   Find average number of the customers in the barber (system) and queue?

B)   Find average waiting time in the barber and queue?

C)   What is the probability that the barber be empty?

D)   What is the probability that exactly 2 customers present in the system

Math   Statistics-And-Probability   
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