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Could you please answer these

In a Q system, the demand rate for strawberry ice cream is normally distributed, with an average of 305 pints per week. The lead time is 8 weeks. The standard deviation of weekly demand is 16 pints. Refer to the standard normal table for z-values. a. The standard deviation of demand during the 8-week lead time is pints. (Enter your response rounded to the nearest whole number.) Your firm uses a continuous review system and operates 52 weeks per year. One of the SKUs has the following characteristics. Refer to the standard normal table for z-values. = > Demand (D) = 18,000 units/year > Ordering cost (S) = $55.00/order > Holding cost (H) = $3.75/unit/year > Lead time (L) = 4 week(s) > Cycle-service level = 96% > Demand is normally distributed, with a standard deviation of weekly demand of 90 units. > Current on-hand inventory is 1,040 units, with no scheduled receipts and no backorders. The item's economic order quantity is units. (Enter your response rounded to the nearest whole number.) 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 2 weeks. Weekly demand is normally distributed, with a mean of 150 units and a standard deviation of 30 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.)