Annual demand for a product is 16,210 units; weekly demand is 310 units with a standard deviation of 55 units. The cost placing an order is $145, and the time from ordering to receipt is four weeks. The annual inventory carrying cost is $0.55 per unit. To provide a 90 percent service probability, what must the point be? Suppose the production manager is told to reduce the safety stock of these item 80 units. If this is done, what will the new service probability be