QUESTION 9 10 points Save Answer Every waiting line has an "arrival process" which is described by an average inter-arrival time (denoted a), a standard deviation of the inter-arrival time (denoted Oa), and the coefficient of variation of the inter-arrival times (denoted CV). True False QUESTION 10 10 points Save Answer A bank's retail counter uses a single waiting line to queue customers who are seen by one of many bank tellers. Suppose on average, 43 customers arrive every hour and that one teller can process 5 customers per hour. What is the minimum viable staffing of tellers so that lines will not grow out of control and queues are "stable"? Enter the integer number of tellers that answers the question. QUESTION 11 10 points Save Answer Questions 11 to 25 refer to variants of the following situation. Three hairstylists, Franois, Bernard, and Mimi, run a hair salon. When customers arrive, they first check in with the receptionist (Bernard's younger sister Lulu). Check-in with LuLu takes 3 minutes. After check-in, the next available hairstylist (Franois, Bernard, or Mimi) invites the customer to a chair and requires, on average, 25 minutes for the hair style (usually 6 minutes to shampoo, 16 minutes to style the hair, and 3 minutes to bill and chat with the customer) and then the customer leaves. Assume there are 3 chairs so Franois, Bernard, and Mimi can each independently serve a different customer at the same time. Also assume that... a. that customers arrive punctually (exactly) every 10 minutes, b. everyone works with robotic precision (there is no variability in service times), and c. the system has been up and running for at least an hour. Compute Lulu's capacity, measured in customers per hour. Round your answer to the closest 1/10th of a customer (e.g., report 100.29 customers per hour as 100.3)