The figure below 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.

T1TypeT3-cT2T5(14)A or B(13)(17)(11)T3-b(10)(15)T3-a

x y graph

T4T6(8)(18)(24)T7

x y graph

Part 2

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.

enter your response here

customers. (Enter your response rounded down to the next whole number.)

Part 3

b. If

40

percent of the customers are Type A customers and

60

percent are Type B customers, what is the average capacity of Barbara's shop in customers per hour?

enter your response here

customers. (Enter your response rounded to two decimal places.)

Part 4

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?

A.

Steps T1, T2, and T4.

B.

Step T3 only.

C.

Steps T3 and T4.

D.

Steps T1, T2, T3, and T4.

Part 5

Where would the Type B customers have to wait, assuming no Type A customers?

A.

Steps T1 and T7.

B.

Steps T6 and T7.

C.

Steps T1, T5, and T6.

D.

Step T6 only.