Check my work Problem 12-8 (Algo) Suppose that the manager of a construction supply house determined from historical records that demand for sand averages 51 tons. In addition, suppose the manager determined that demand during lead time could be described by a normal distribution that has a mean of 51 and a standard deviation of 3 tons. Answer the following questions assuming that the manager is willing to accept a stockout risk of no more than 2 percent. Use Table B 2 (Round your answer to two decimal points.) a. What value of z is appropriate? 9:33 Z-Value b. How much safety stock should be held? (Round your answer to two decimal points.) Safety Stock