Question: please help with B & C c. the order quantity is ___ Nationwide Auto Parts uses a periodic review inventory control system for one of

please help with B & C

c. the order quantity is ___

Nationwide Auto Parts uses a periodic review inventory control system for one of its stock items. The review interval is 8 weeks, and the lead time for receiving the materials ordered from its wholesaler is 1 weeks. Weekly demand is normally distributed, with a mean of 250 units and a standard deviation of 50 units. Refer to the standard normal table for z-values. a. What is the average and the standard deviation of demand during the protection interval? The average demand during the protection interval is units. (Enter your response as an integer.) The standard deviation of demand is units. (Enter your response rounded to two decimal places.) b. If the firm desires 90 percent stockout protection, the target inventory level is units. (Enter your response rounded to the nearest whole number.)

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