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 12 minutes to give a haircut.

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. H is market survey data indicate that customers arrive at a rate of 4.0 per hour. It will take Benny an average of 12 minutes to give a haircut. Based on these flgures, find the following: a. The average number of customers waiting: Note: Round your intermediato calculations to 3 decimal places and final answer to 2 docimal places. b. The average time a customer waits. Note: Round your answer to 2 decimal places. c. The average time a customer is in the shop