Benny the Barber owns a one-chair shop. At barber college, they told Benny that his customers would exhibit a Poisson arrival distribution and that he would provide an exponential service distribution. His market survey data indicate that customers arrive at a rate of 4.0 per hour. It will take Benny an average of 10 minutes to give a haircut. Based on these figures, find the following:
1. The average number of customers waiting?
2.The average time a customer waits?
3. The average time a customer is in the shop?
4. The average utilization of benny's time?