Using the reorder level-order quantity model, and assuming a safety stock of 800, what is the re-order point (R) given a daily demand of 300 units, a lead time of 5 days? 300 800 1500 2300 1100 Which of the following basic types of process structures needs to keep inventory of work-in-process component parts? Assemble to Order Make to Stock O None of the above Make to Order Engineer to Order Suppose a call center has one agent answering the calls. Customers call in at the rate of 10 per hour, and on average it takes 4 minutes to answer a call. There is no limit on the queue length. The average time that a customer spends in the system is 12 minutes. What is the service rate per hour? O 10 20 15 O O