Consider pereiod review system, where orders are placed every 20 days. The firm strives to provide a 94.6% cycle service level. Demand averages 420 units per day, and the standard deviation of demand per day is 106 units. Lead time is 11 days.  a. How many units of safety stock should be held? b. What should the target inventory level (order-up-to level) be? c. Suppose that it is time to review the item. There are 160 units in inventory, and there is an outstandin back order for 400 units. An order for 128 units is on the way, how many units should be ordered now?

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
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Consider pereiod review system, where orders are placed every 20 days. The firm strives to provide a 94.6% cycle service level. Demand averages 420 units per day, and the standard deviation of demand per day is 106 units. Lead time is 11 days. 

a. How many units of safety stock should be held?

b. What should the target inventory level (order-up-to level) be?

c. Suppose that it is time to review the item. There are 160 units in inventory, and there is an outstandin back order for 400 units. An order for 128 units is on the way, how many units should be ordered now?

 

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