Marty’s Barber Shop has one barber. Customers have an arrival rate of 2.2 customers per hour, and haircuts are given with a service rate of 5 per hour. Use the Poisson arrivals and exponential service times model to answer the following questions:
What is the probability that no units are in the system?
What is the probability that one customer is receiving a haircut and no one is waiting?
What is the probability that one customer is receiving a haircut and one customer is waiting?