McCreery's Chips sells large tins of potato chips at a grocery superstore. Every 10 days, a McCreery's delivery person stops by a checks the inventory level. He then places an order, which is delivered 3 days later. Average demand during the reorder period and order lead time is 300 tins. The standard deviation of demand during this same time period is 50 tins. If he places an order of 380 tins, what is customer service level in percent? Your