Assume an average rail transit time $(t)$ from Kentucky to Butte, Montana, of $4$ days and an average variance in transit $($lead$)$ time $1\mathrm{.}5$ days. Compute safety stock requirements $($combined effects standard deviation for both demand and transit time $($Stotal$)$ for Golden Best inventories at the Butte, Montana, distribution center that will provide a stock protection level of $93\mathrm{.}32$ percent. Exhibit $2.$ The statistic table in the case provides the information needed. Given the daily demand of $510$ cases, annual demand of $170,000$ cases, Standard Deviation of Demand of $11\mathrm{.}500$ cases.