Nationwide Auto Parts uses a periodic review inventory control system for one of its stock items. The review interval is 9 weeks, and the lead time for receiving the materials ordered from its wholesaler is 4 weeks. Weekly demand is normally distributed, with a mean of 175 units and a standard deviation of 35 units. Refer to the standard normal table LOADINGfor z-values.

Part 2

a. What is the average and the standard deviation of demand during the protection interval?

The average demand during the protection interval is

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units. (Enter your response as an integer.)