1. Lindner Congress Bookstore sells a unique calculator to college students. The demand for this calculator can be described by a normal distribution with an average daily demand of 25 units and a standard deviation of 4 units per day. The order lead time for this calculator is constant at 10 days. Compute the (a) standard deviation of demand during the lead time period, and determine the (b) safety stock and (c) reorder point that result in a 95 percent service level