A barbershop staffed with only one barber receives an average of 20 customers per day. The...

 

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A barbershop staffed with only one barber receives an average of 20 customers per day. The mean service time averages about 20 minutes per customer. Assuming that the customer arrival follows a Poisson distribution and the service time follows an exponential distribution. Answer the following questions knowing that the barber works only for 8 hours a day: What is the average number of customers waiting (sitting)? (2 decimal points) A barbershop staffed with only one barber receives an average of 20 customers per day. The mean service time averages about 20 minutes per customer. Assuming that the customer arrival follows a Poisson distribution and the service time follows an exponential distribution. Answer the following questions knowing that the barber works only for 8 hours a day: What is the average number of customers waiting (sitting)? (2 decimal points)