a. What is the probability that no units are in the system? If required, round your answer to four decimal places. P0= b. What is the probability that one customer is receiving a haircut and no one is waiting? If required, round your answer to four decimal places. p1= c. What is the probability that one customer is receiving a haircut and one customer is waiting? If required, round your answer to four decimal places. P2= d. What is the probability that one customer is receiving a haircut and two customers are waiting? If required, round your answer to four decimal places. P3= e. What is the probability that more than two customers are waiting? If required, round your answer to four decimal places. P( More than 2 waiting )= f. What is the average time a customer waits for service? If required, round your answer to four decimal places. Wq=hours