Asmall copy center uses 4 590-sheet boxes of copy paper a week. experience suggests that usage can be well approximated by a normal distribution with a mean of 4 boxes per week and a standard deviation of .50 boxes per week. 2 weeks are required to fill an order for letterhead stationery. ordering cost is $5, and annual holding cost is 37 cents per box. determine the economic order quantity, assuming a 52-week year.