Objectives• Learn how to define Referenced Properties• Use Controls to define multiple scenarios in experiment• Evaluate different configurations of a Subway restaurant• Perform comparisons using side-by-side SMORE plots

System Description and Data

• Arrival rate: 32 customers/hour• Service times are all triangularly distributed with the following parameters

(Minutes):• Bread & Meat: (1, 1.5, 2) • Oven: (0.5, 1, 1.5)• Veggies: (1, 1.5, 2)• Cashier: (0.5, 1, 1.5)• Drink: (0.5, 1, 1.5)

• 70% of the customers want their sandwich toasted and 30% get cold subs• The current operating policy requires that FIFO (First In First Out) must be

maintained throughout the system, i.e., cold sandwiches should also wait in the queue for the oven (if there is one).

• Customers balk if there are 6 people in the system

Bread & Meat Oven Veggies Cashier Drink ExitEnter

Performance Measures

• Evaluate the performance of the system during lunch rush• Perform analysis to answer the following two questions:

Where to add two additional “resources” to reduce lost sales (balks)? What is the best operating policy given the new system configuration

(“Passing” or the current “No passing” policy)?

• Performance measures Server utilizations Average Time In System (TIS) for all customers Expected Number in System (NIS) Percentage of customers that balk Average TIS per customer type

Bread & Meat Oven Veggies Cashier Drink ExitEnter

Referenced Properties• Specify the value for an object property• Define experiment scenarios if set to appear as a control