Problem 11-09 (Algorithmic) Marty's Barber Shop has one barber. Customers have an arrival rate of 2.8 customers per hour, and haircuts are given with a service rate of 5 per hour. Use the Poisson arrivals and exponential service times model answer the following questions: 1. What is the probability that no units are in the system? Round your answer to four decimal places. 0.44 D. What is the probability that one customer is receiving a haircut and no one is weiting? Round your answer to four decimal pleces P: = 0.2464 c. What is the probability that one customer is receiving a haircut and ane customer is waiting? Raund your answer to four decimal places. P2 -0.1380 d. What is the probability that one customer is receiving a haircut and two customers are waiting? Round your answer to four decimal places. Py = 0.0773 e. What is the probability that more than twa customers are waiting? Round your answer to four decimal places. P{Mare than 2 waiting) = 0.1756 x 1. What is the everage time a customer waits for service? Round your answer to four decimal pleces. We = 0.2545 X minutes Fwdk Partially correct