Concept explainers
a)
Concept introduction:lead time is
b)
Concept introduction:lot size -reorder point system relies on the assumption that inventories are renewed continuous rate then periodically that is the state of the system is always known.
c)
Concept introduction:the new vendor model is appropriate for a problem that essentially restarts from scratch every period.newspaper has no value in the market. Same for three possible scrap value of the paper itself.
d)
Concept introduction: ABC classification system is one of the ranking items. Items are sequenced in decreasing order of annual dollar volume of sales or usage.
e)
Concept introduction:the extension of EOQ is also known as finite production rate model. Key random variable demand during the lead time.
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Production and Operations Analysis, Seventh Edition
- Which of the following is NOT an assumption of the EOQ model?a. It is possible to receive a purchase discount if the order quantity is sufficiently large.b. There is a fixed cost to submit each order that is independent of the amount ordered.c. Demand occurs at a constant rate per unit of time.d. There is a cost to hold each unit of inventory per unit of timearrow_forwardThe materials manager of a tire manfacturer must predict periodically place order for a key chemical one of the raw materials used in manufacturing uses the chemical at a rate of 300lbs each week and the lead time of delivery is 4 days. Assume that the manufacturing operation runs 5 days a week. At what point should the chemical be reorderedd a. when 1200lbs are remaining b. where 0lbs are remaining c. where 375lbs are remaining d. when 240lbs are remarrow_forwardThe basic EOQ model is based on all the following assumptions except: * A. Annual demand is known and constant.B. The item is always available when needed.C.Estimates of ordering and carrying costs are accurate.D.Order is instantaneously received exactly when previous inventory has just been used up.arrow_forward
- Nutmeg Inc. uses the LIFO method to account for inventory. During years in whichinventory unit costs are generally rising and in which the company purchases more inventory than it sells to customers, its reported gross profit margin will most likely be:A. lower than it would be if the company used the FIFO method.B. higher than it would be if the company used the FIFO method.C. about the same as it would be if the company used the FIFO method.arrow_forwardA newsvendor orders the quantity that maximizes expected profit for two products, X and Y. The critical ratio for both products is .8. The demand forecast for both products is 9000 units and both are normally distributed. Product X has more uncertain demand in the sense that it has the larger standard deviation. Of which of the two products does the newsvendor order morea. Product X because it has less certain demand. b. Product Y because it has more certain demand. c. The order quantities are the same because they have the same critical ratio. d. More information is needed to determine which has the higher order quantity.arrow_forwardWhich of the following statements is FALSE of a fixed-quantity system (FQS)? Select one: a. In FQS, fixed quantity is ordered to bring the inventory position up to the replenishment level. b. In FQS with uncertain demand, the reorder point is chosen to include the demand during lead time, plus any safety stock. c. In FQS, inventory position is checked continuously, rather than at fixed intervals of time. d. In FQS, orders are placed when the inventory position reaches or drops below the reorder point. e. In FQS with uncertain demand, orders are placed with the same order quantity, but not necessarily with the same periodicity.arrow_forward
- In the fixed-time period model, the order quantity is determined for which: A. The total annual inventory cost is minimized.B. The annual setup cost is equal to the annual holding cost.C. The probability of stockout is minimized.D. None of the abovearrow_forwardQuantity to OrderDaily demand for a product is 10 units, with a standard deviation of 3 units. The review period is 30 days, and the lead time is 14 days. Management has set a policy of satisfying 98 percent of demand from items in stock. At the beginning of this review period, there are 150 units in inventory.How many units should be ordered?arrow_forwardBigby Riggs sells high-end art frames that are ordered every Thursday to prepare for next week's demand. The most popular frame style is sold at $50 per unit and it costs Bigby $35 per piece. If too many art frames are ordered, Bigby incurs an inventory carrying cost of $2 per frame. If Bigby runs out of stock for the week, he forgoes the profits from missed sales. Bigby has the option to order 100, 150, or 200 art frames to meet next week's demand which can be either 100, 150, or 200 frames. Based on historical demand, Bigby has determined the following probability information: P(100) = 0.4, P(150) = 0.3, P(200) = 0.3 What is the Expected Monetary Value of your best alternative?arrow_forward
- Bigby Riggs sells high-end art frames that are ordered every Thursday to prepare for next week's demand. The most popular frame style is sold at $50 per unit and it costs Bigby $35 per piece. If too many art frames are ordered, Bigby incurs an inventory carrying cost of $2 per frame. If Bigby runs out of stock for the week, he forgoes the profits from missed sales. Bigby has the option to order 100, 150, or 200 art frames to meet next week's demand which can be either 100, 150, or 200 frames. Based on historical demand, Bigby has determined the following probability information: P(100) = 0.4, P(150) = 0.3, P(200) = 0.3 The expected value of perfect information (EVPI) is $_________.arrow_forwardSuppose inventory is managed using the order-up-to model. The inventory position is 20and demand in the last period was 10. What is the target in-stock probability? a. 95 percentb. 96 percentc. 97 percentd. 98 percente. 99 percentf. Could be any of the above a–eg. Cannot be any of the above a–earrow_forwardThe EOQ is optimal because it a. minimizes the total inventory cost. b. minimizes the ordering cost of inventory. c. minimizes the holding cost of inventory. d. maximizes the on-hand inventory. e. does none of these.arrow_forward
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