3.

3. Figure 5.11 details the process flow for two types of customers who enter Barbara's Boutique shop for customized dress alterations. After Step T1, Type A customers proceed to Step T2 and then to any of the three workstations at T3, followed by Steps T4 and T7. After Step T1, Type B customers proceed to Step T5 and then Steps T6 and T7. The numbers in parentheses are the minutes it takes to process a customer. a. What is the capacity of Barbara's shop in terms of the numbers of Type A customers who can be served in an hour? Assume no customers are waiting at Steps T1 or T7. b. If 30 percent of the customers are Type A customers and 70 percent are Type B customers, what is the average capacity of Barbara's shop in customers per hour? C. Assuming that the arrival rate is greater than five customers per hour, when would you expect Type A customers to experience waiting lines, assuming no Type B customers in the shop? Where would the Type B customers have to wait, assuming no Type A customers? T3-a (14)