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- 4.1 The following gives the number of units of type A blood used at Woodlawn Hospital in the past six weeks: a. Forecast the demand for the week of October 12 using a three-week moving average. b. Use a three-week weighted moving average, with weights of 0.1,0.3, and 0.6, using 0.6 for the most recent week. Forecast demand for the week of October 12 . c. Compute the forecast for the week of October 12 using exponential smoothing with a forecast for August 31 of 360 and =0.2, Ps - 12.12 Thomas Kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation. Thomas's fastest-moving inventory item has a demand of 6000 units per year. The cost of each unit is $100, and the inventory carrying cost is $10 per unit per year. The average ordering cost is $30 per order. It takes about five days for an order to arrive, and the demand for one week is 120 units. (This is a corporate operation, and there are 250 working days per year.) a. What is the EOQ ? b. What is the average inventory if the EOQ is used? c. What is the optimal number of orders per year? d. What is the optimal number of days between any two orders? e. What is the annual cost of ordering and holding inventory? f. What is the total annual inventory cost, including cost of the 6000 units? Pr