A company uses a periodic review system and operates 52 weeks per year. The review interval for a specific SKU is 6 weeks, and the lead time for receiving the materials ordered from the wholesaler is 3 weeks. Weekly demand is normally distributed, with a mean of 100 units and a standard deviation of 20 units. Answer the next three questions using the above information. Question 8 10 pts What is the average and the standard deviation of demand during the protection interval? Average =600, Standard Deviation =48 Average =900, Standard Deviation =60 Average =600, Standard Deviation =60 Average =900, Standard Deviation =48 What should be the target inventory level if the firm desires 95 percent stockout protection? 891 1018 953 999 If 350 units were in stock at the time of a periodic review, how many units should be ordered? 456 795 548 649