Problem 11-13 (Algo) Dunstreet's Department Store would like to develop an inventory ordering polcy with a 90 percent probabity of not stocking out. To filustrate your recommended procedure, use as an example the ordering policy for white percale stieets. Demand for white percale sheets is 3.400 per year. The store is open 365 days per year. Every two weeks (h4 olays) inventory is counted and a new order is placed. It takes 12 days for the sheets to be delivered. Standard deviation of demand for the shieets is five. per day. There are currently 170 sheets on-hand. How mary sheets should you order? Note: Use Excer's NORM. S.INYQ function to find the z value. Do not round intermediate calculetions. Round z value to 2 decimal places and final answer to the nearest whole number