OPERATIONS MANAGEMENT
2nd Edition
ISBN: 9781260238877
Author: CACHON
Publisher: RENT MCG
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Question
Chapter 14, Problem 10PA
a)
Summary Introduction
To determine: The number of boxes of peppermint soap ordered on average each week.
b)
Summary Introduction
To determine: The average inventory in boxes.
c)
Summary Introduction
To determine: The stockout probability.
d)
Summary Introduction
To determine: The base stock level.
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A product’s demand over (l + 1) periods is normally distributed with a mean of 100 and standard deviation of 10. Lead time is 2 periods. The order-up-to model is used to manage inventory. If in-stock probability stays at 99%, what will happen to expected on-hand inventory when expected demand increases to 200?
A) It will increase.
B) It will stay the same.
C) It will decrease.
D) It may either increase or decrease.
You are the owner of Hotspices.com, an online retailer of hip, exotic, and hard-to-findspices. Consider your inventory of saffron, a spice (generally) worth more by weightthan gold. You order saffron from an overseas supplier with a shipping lead time of fourweeks and you order weekly. Average weekly demand is normally distributed with amean of 40 ounces and a standard deviation of 30 ounces.a. Suppose it uses an order-up-to level of 301 ounces. What is its expected on-hand inventory? b. Suppose it uses an order-up-to level of 250 ounces. What is its expected on-order inventory? c. Suppose it uses an order-up-to level of 368 ounces. What is its in-stock probability? d. Suppose it wants a .96 in-stock probability. What should its order-up-to level be?
It takes approximately 2 weeks (14 days) for an order ofsteel bolts to arrive once the order has been placed. The demandfor bolts is fa irly constant; on the average, the manager, MichelleWu, has observed that the hardware store sells 500 of these boltseach day. Because the demand is fairly constant, Michelle believesthat she can avoid stockouts completely if she orders the bolts atthe correct time. What is the reorder poin t?
Chapter 14 Solutions
OPERATIONS MANAGEMENT
Ch. 14 - Demand in each period follows the same normal...Ch. 14 - Prob. 2CQCh. 14 - For products with slow-moving demandfor example,...Ch. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Prob. 7CQCh. 14 - Prob. 8CQCh. 14 - If the target in-stock probability increases, then...Ch. 14 - Prob. 10CQ
Ch. 14 - Prob. 11CQCh. 14 - Prob. 12CQCh. 14 - Prob. 13CQCh. 14 - Prob. 14CQCh. 14 - Prob. 15CQCh. 14 - Prob. 16CQCh. 14 - Prob. 17CQCh. 14 - Prob. 18CQCh. 14 - Prob. 19CQCh. 14 - Prob. 1PACh. 14 - Prob. 2PACh. 14 - Prob. 3PACh. 14 - Prob. 4PACh. 14 - You are the owner of Hotspices.com, an online...Ch. 14 - Prob. 6PACh. 14 - Prob. 7PACh. 14 - Prob. 8PACh. 14 - Prob. 9PACh. 14 - Prob. 10PACh. 14 - Prob. 11PACh. 14 - Prob. 1CCh. 14 - Prob. 2CCh. 14 - Prob. 3CCh. 14 - CASE WARKWORTH FURNITURE1 Warkworth Furniture...Ch. 14 - CASE WARKWORTH FURNITURE1 Warkworth Furniture...
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- A car rental agency uses 96 boxes of staples a year. The boxes cost $5 each. It costs $10 to order staples, and it costs $0.80 to hold a box of staples in inventory for 1 year. A.) How many boxes of staples should the car rental company order each time it needs staples, to minimize the combined ordering and holding costs for staples? B.) Using the order size that minimizes the car rental agency’s combined ordering and holding costs for staples, how long will a single order of staples last the agency, before it must receive more staples? (Assume there are 52 weeks in the year for the car rental agency.) C.) Using the order size that minimizes the car rental agency’s combined ordering and holding costs for staples, how much does the car rental agency actually spend on holding costs for staples each year?arrow_forwardA company would like to classify its inventory systems using ABC Inventory classification system. The rules for ABC dassification are STRICTLY applied such that 80% cumulative budget is assigned to A class inventory items. The next 15% cumulative budget is assigned to B class inventory items, and Only 5% of the cumulative budget is assigned to class inventory itemsThe inventory items are XYZ1, XYZ2, XYZ3and respectively. The Annual demands (units per year) for these items are 290,457159, and 577 respectively. Also, the corresponding per unit prices are 19 33, 126and respectively measured in OMR. Which items (among XYZ1, XYZ2, XYZ3, and XYZ4) are classified as Adass inventoryarrow_forwardHayes Electronics assumed with certainty that the ordering cost is $450 per order and the inventory carrying cost is $170 per unit per year. However, the inventory model parameters are frequently only estimates that are subject to some degree of uncertainty. Consider four cases of variation in the model parameters: (a) Both ordering cost and carrying cost are 10% less than originally estimated, (b) both ordering cost and carrying cost are 10% higher than originally estimated, (c) ordering cost is 10% higher and carrying cost is 10% lower than originally estimated, and (d) ordering cost is 10% lower and carrying cost is 10% higher than originally estimated. Determine the optimal order quantity and total inventory cost for each of the four cases. Prepare a table with values from all four cases and compare the sensitivity of the model solution to changes in parameter values.arrow_forward
- Suppose the following item is being managed using a fixed-order quantity model with safety stock. Annual Demand = 100,000 units Order quantity = 30,000 units Safety stock = 4000 units What are the average inventory level and inventory turnover for this item?arrow_forwardHayes electronics assumed with certainty that the ordering cost is $450 per order and the inventory carrying cost is $170 per unit per year. However, the inventory model parameters are frequently only estimates that are subject to some degree of uncertainty. Consider four cases of variation in the model parameters as follows: (a) both ordering cost and carrying cost are 10% less that originally estimated, (b) both ordering cost and carrying cost are 10% higher than originally estimated, (c) ordering cost is 10% higher and carrying cost is 10% lower than originally estimated, and (d) ordering cost is 10% lower and carrying cost is 10% higher than originally estimated. Determine the optimal order quantity and total inventory cost for each of the four cases. Prepare a table with values from all four cases and compare the sensitivity of the model solution to changes in parameter values.arrow_forwardLeaky Pipe, a local retailer of plumbing supplies, faces demand for one of its SKUs at a constant rate of 30,000 units per year. It costs Leaky Pipe $10 to process an order to replenish stock and $1 per unit per year to carry the item in stock. Stock is received 4 working days after an order is placed. No backordering is allowed. Assume 300 working days a year.a. What is Leaky Pipe’s optimal order quantity?b. What is the optimal number of orders per year?c. What is the optimal interval (in working days) between orders?d. What is the demand during the lead time?e. What is the reorder point?f. What is the inventory position immediately after an order has been placed?arrow_forward
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