Additional Algo 11-4 On-Order Quantity A fabricating shop orders supplies every 4 days. The lead time for deliveries is 7 days. Demand for acetylene averages 28 pounds per day with a standard deviation of 3.1 pounds. The holding cost for acetylene is $0.5 per pound per day. The fabricating shop wants to achieve an instock probability rate of 98% for acetylene. On average, how many pounds of acetylene will the fabricating shop have on order