Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 12, Problem 14DQ
Summary Introduction
To explain: The expression “robust model.” Specifically, what would you tell a manager who exclaimed, “Uh-oh, we’re in trouble! The calculated EOQ is wrong; actual demand is 10% greater than estimated.
Introduction:
Economic order quantity (EOQ):
EOQ is the quantity of units a company must add to its inventory so as to minimize the full inventory costs. It will determine the ideal order quantity which will decrease the inventory management costs.
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Explain what is meant by the expression " robust model."Specifically, what would you tell a manager who exclaimed,"Uh-oh, we're in trouble! The calculated EOQ is wrong; . jactual demand is 10% greater than estimated."
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Chapter 12 Solutions
Principles Of Operations Management
Ch. 12 - Ethical Dilemma Wayne Hills Hospital in tiny...Ch. 12 - Prob. 1DQCh. 12 - Prob. 2DQCh. 12 - What is the purpose of the ABC classification...Ch. 12 - Prob. 4DQCh. 12 - Explain the major assumptions of the basic EOQ...Ch. 12 - Prob. 6DQCh. 12 - Prob. 7DQCh. 12 - Prob. 8DQCh. 12 - What impact does a decrease in setup time hive on...
Ch. 12 - Prob. 10DQCh. 12 - Prob. 11DQCh. 12 - Explain the following: All things being equal, the...Ch. 12 - Prob. 13DQCh. 12 - Prob. 14DQCh. 12 - Prob. 15DQCh. 12 - When demand is not constant, the reorder point is...Ch. 12 - Prob. 17DQCh. 12 - State a major advantage, and a major disadvantage,...Ch. 12 - L. Houts Plastics it a large manufacturer of...Ch. 12 - Prob. 2PCh. 12 - Jean-Mane Bourjollys restaurant has the following...Ch. 12 - Lindsay Electronics, a small manufacturer of...Ch. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - William Sevilles computer training school, in...Ch. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Matthew Liotines Dream Store sells beds and...Ch. 12 - Southeastern Bell stocks a certain switch...Ch. 12 - Lead time for one of your fastest-moving products...Ch. 12 - Annual demand for the notebook binders at Duncans...Ch. 12 - Thomas Kratzer is the purchasing manager for the...Ch. 12 - Joe Henrys machine shop uses 2,500 brackets during...Ch. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Prob. 18PCh. 12 - Prob. 19PCh. 12 - Prob. 20PCh. 12 - Cesar Rego Computers, a Mississippi chain of...Ch. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - M. P. VanOyen Manufacturing has gone out on bid...Ch. 12 - Chris Sandvig Irrigation, Inc., has summarized the...Ch. 12 - Prob. 28PCh. 12 - Prob. 29PCh. 12 - Prob. 30PCh. 12 - Prob. 31PCh. 12 - Prob. 32PCh. 12 - Prob. 33PCh. 12 - Prob. 34PCh. 12 - Prob. 35PCh. 12 - Prob. 36PCh. 12 - Prob. 37PCh. 12 - Prob. 38PCh. 12 - Prob. 39PCh. 12 - Prob. 40PCh. 12 - Barbara Flynn is in charge of maintaining hospital...Ch. 12 - Prob. 42PCh. 12 - Authentic Thai rattan chairs (shown in the photo)...Ch. 12 - Prob. 44PCh. 12 - Prob. 45PCh. 12 - Prob. 46PCh. 12 - Prob. 47PCh. 12 - Gainesville Cigar stocks Cuban agars that have...Ch. 12 - A gourmet coffee shop in downtown San Francisco is...Ch. 12 - Prob. 50PCh. 12 - Prob. 51PCh. 12 - Henrique Correas bakery prepares all its cakes...Ch. 12 - Prob. 53PCh. 12 - Prob. 1CSCh. 12 - Prob. 2CSCh. 12 - Prob. 3CSCh. 12 - Prob. 1.1VCCh. 12 - Prob. 1.2VCCh. 12 - Prob. 1.3VCCh. 12 - Prob. 1.4VCCh. 12 - Prob. 1.5VCCh. 12 - Prob. 1.6VCCh. 12 - Prob. 1.7VCCh. 12 - Prob. 2.1VCCh. 12 - Prob. 2.2VCCh. 12 - Prob. 2.3VCCh. 12 - Prob. 2.4VCCh. 12 - Inventory Control at Wheeled Coach Controlling...Ch. 12 - Prob. 3.2VCCh. 12 - Inventory Control at Wheeled Coach Controlling...
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- Calculate total annual cost for the alternative suppliers for aproduct with following characteristics: montly demand; mean: 5000, standard deviation 2000 Holding cost: 30% Cycle service level: 98% Using EOQ formula, find the lot size. Don’t forget to add ordering cost to the total cost! Supplier 1 Supplier 2 Supplier 3 Ordering Cost(per order ) 1000 2000 5000 Cost 10 9 8 Average Lead Time ( month ) 0.5 2 2 Lead time std deviation ( month ) 0.5 1 2arrow_forwardLead time for one of your fastest-moving products is21 days. Demand during this period averages 100 units per day.a) What would be an appropriate reorder point?b) How does your answer change if demand during lead timedoubles?c) How does your answer change if demand during lead timedrops in half?arrow_forwardWhy do the basic EOQ model variations not include theprice of an item?arrow_forward
- Exercise on EOQ and TAIC: Data: D = 7000 flyers, Q = 500 flyers S = $100, k = 28%, C = $2, number of days/year = 350 days Calculate the total cost and the total inventory cost to see if the company's ordering policy needs to be changed. If yes, how should it be changed? Question 2: This year's forecast for D is 8000 flyers/year. The following price list is given according to quantity: Quantity Price 599- 999 2,5$ 1000- 1999 2$ > 2000 1,5 $ How should the ordering policy be changed? (Note: questions about ordering policies like this require finding two factors: when to order and how much to order each time.)arrow_forwardA firm cost of good sold averages P2,000,000 per month, and it keeps an inventory equal to 50% of its monthly cost of good sold on hand at all times. Using a 365 -day year, what is its inventory conversion period? Standford Packing had sales of P3.2 million and a gross profit margin of 35% last year. If Standford inventory averaged P0.4 million last year, What was the length of the average age of inventory?arrow_forwardExplain why it is not necessary to include product cost (price or price time quanity in the EOQ model, but the quantity discount model requires this information ?arrow_forward
- When quantity discounts are offered, why is it not necessary to check discount points that are below the EOQ orpoints above the EOQ that are not discount points?arrow_forwardWeekly Average Demand 110 Standard deviation of (weekly) demand 30 Setup cost ($) 1400 Lead time (in weeks) 2 Procurement cost ($) 200 Holding cost /unit/week ($) 3 You are given the demand and inventory related information about a grocery store’s product in the table. The store is open for 46 weeks in a year. What is the reorder point if it wants to achieve a service level of 97%? (Do not round your intermediate calculations. Round your final answers to the nearest whole number.arrow_forwardThe demand at Arnold Palmer Hospital for a special-ized surgery pack is 60 per week, virtually every week. The lead time from McKesson, its main supplier, is normally distributed, with a mean of 6 weeks for this product and astandard deviation of 2 weeks. A 90% weekly service level isdesired. Find the ROP.arrow_forward
- Describe the inventory models of stochastics? What is the use of when?arrow_forwardX Ltd buys & uses a component for production at 10/piece Annual requirement is 2000 pieces. Carrying cost of inventary is 10% per annum & ordering cost is 40/order. The purchase manager proposes that a single order to be placed for the entire annual requirement. If X Ltd order 2000 piece at a time we get a 3% discount. Evaluate this proposal & make your recommendationarrow_forwardMichael's Mechanical sells 6,000 jettison machines annually. Each machine costs Michael's $2,000 to purchase, inventory carrying costs are 36 percent of the purchase price, and the cost of placing an order with its supplier is $150. What is the EOQ? Round your answer to the nearest whole number. machines What is the total inventory cost at the EOQ level? Do not round intermediate calculations. Round your answer to the nearest dollar. $arrow_forward
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