Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 13, Problem 22P
The injection molding department of a company uses an average of 30 gallons of special lubricant a day. The supply of the lubricant is replenished when the amount on hand is 170 gallons. It takes four days for an order to be delivered. Safety stock is 50 gallons, which provides a stockout risk of 9 percent. What amount of safety stock would provide a stockout risk of 3 percent? Assume normality.
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A company begins a review of ordering policies for its continuous review system by checking the current policies for a sample of SKUS Following are the characteristics of one tem
Demand (D)=85 units/week (Assume 52 weeks per year)
Ordening and setup cost (S) $75/order
Holding cost (H)-$16/und/year
Lead time (L) 5 week(s)
Standard deviation of weekly demand 22 units
Cycle-service lovel-90 percent
>EOQ-207 units
Using the above information, develop the best policies for a periodic review system Refer to the standard normal table for z-values
a. What value of P gives the same approximate number of orders per year as the EOQ? weeks (Enter your response rounded to the nearest whole number)
b. To provide a 98 percent cycle-service level, the average safety stock is
To provide a 98 percent cycle-service level, the target inventory level is
unts (Enter your response rounded to the nearest whole number)
units (Enter your response rounded to the nearest whole number)
The Westerville Auto Parts Company produces rocker-arm assemblies for use in the steering and suspen-sion systems of four-wheel-drive trucks. A typical container of parts spends 0.02 day in processing and0.08 day in materials handling and waiting during its manufacturing cycle. The daily demand for the part is2,000 units. Management believes that demand for the rocker-arm assembly is uncertain enough to war-rant a safety stock equivalent of 10 percent of its authorized inventory.a. If each container contains 22 parts, how many containers should be authorized?b. Suppose that a proposal to revise the plant layout would cut materials handling and waiting time percontainer to 0.06 day. How many containers would be needed?
Which of the following is incorrect about the safety stock?
Group of answer choices
As the amount of safety stock carried increases, service level increases
As the amount of safety stock carried increases, the risk of stock-out decreases
If there is no uncertainty, there is no need to keep safety stock
As the amount of safety stock carried increases, the risk of stock-out increases
Safety stock protects companies against uncertainty
Chapter 13 Solutions
Operations Management
Ch. 13 - What are the primary reasons for holding...Ch. 13 - What are the requirements for effective inventory...Ch. 13 - Briefly describe each of the costs associated with...Ch. 13 - What potential benefits and risks do RFID tags...Ch. 13 - Prob. 5DRQCh. 13 - Prob. 6DRQCh. 13 - a. List the major assumptions of the EOQ model. b....Ch. 13 - Explain briefly how a higher carrying cost can...Ch. 13 - What is safety stock, and what is its purpose?Ch. 13 - Prob. 10DRQ
Ch. 13 - What is meant by the term service level? Generally...Ch. 13 - Describe briefly the A-B-C approach to inventory...Ch. 13 - The purchasing agent for a company that assembles...Ch. 13 - Explain how a decrease in setup time can lead to a...Ch. 13 - What is the single-period model, and under what...Ch. 13 - Can the optimal stocking level in the...Ch. 13 - Prob. 17DRQCh. 13 - What trade-offs are involved in each of these...Ch. 13 - Who needs to be involved in inventory decisions...Ch. 13 - How has technology aided inventory management? How...Ch. 13 - To be competitive, many fast-food chains began to...Ch. 13 - As a supermarket manager, how would you go about...Ch. 13 - Sam is at the post office to mail a package. After...Ch. 13 - Give two examples of unethical conduct involving...Ch. 13 - Prob. 1PCh. 13 - a. The following table contains figures on the...Ch. 13 - A bakery buys flours in 25-pound bags. The bakery...Ch. 13 - A large law firm uses an average of 40 boxes of...Ch. 13 - Garden Variety Flower Shop uses 750 clay pots a...Ch. 13 - A produce distributor uses 800 packing crates a...Ch. 13 - A manager receives a forecast for next year....Ch. 13 - A food processor uses approximately 27,000 glass...Ch. 13 - The Friendly Sausage Factory (FSF) can produce hot...Ch. 13 - A chemical firm produces sodium bisulfate in...Ch. 13 - A company is about to begin production of a new...Ch. 13 - Prob. 12PCh. 13 - A mail-order house uses 18,000 boxes a year....Ch. 13 - A jewelry firm buys semiprecious stones to make...Ch. 13 - A manufacturer of exercise equipment purchases the...Ch. 13 - A company will begin stocking remote control...Ch. 13 - A manager just received a new price list from a...Ch. 13 - A newspaper publisher uses roughly 800 feet of...Ch. 13 - Given this information: Expected demand during...Ch. 13 - Given this information: Lead-time demand = 600...Ch. 13 - Demand for walnut fudge ice cream at the Sweet...Ch. 13 - The injection molding department of a company uses...Ch. 13 - A company uses 85 circuit boards a day in a...Ch. 13 - One item a computer store sells is supplied by a...Ch. 13 - The manager of a car wash received a revised price...Ch. 13 - A small copy center uses five 500-sheet boxes of...Ch. 13 - Ned's Natural Foods sells unshelled peanuts by the...Ch. 13 - Regional Supermarket is open 360 days per year....Ch. 13 - A service station uses 1,200 cases of oil a year....Ch. 13 - Caring Hospital's dispensary reorders doses of a...Ch. 13 - A drugstore uses fixed-order cycles for many of...Ch. 13 - Prob. 32PCh. 13 - Prob. 33PCh. 13 - Demand for jelly doughnuts on Saturdays at Don's...Ch. 13 - A public utility intends to buy a turbine as part...Ch. 13 - Skinner's Fish Market buys fresh Boston bluefish...Ch. 13 - A small grocery store sells fresh produce, which...Ch. 13 - Demand for devil's food whipped-cream layer cake...Ch. 13 - Prob. 39PCh. 13 - Demand for rug-cleaning machines at Clyde's...Ch. 13 - A manager is going to purchase new processing...Ch. 13 - A Las Vegas supermarket bakery must decide how...Ch. 13 - Offwego Airlines has a daily flight from Chicago...Ch. 13 - UPD Manufacturing produces a range of health care...Ch. 13 - Prob. 1.2CQCh. 13 - Prob. 2.1CQCh. 13 - Grill Rite is an old-line company that started out...Ch. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - Prob. 4.3CQCh. 13 - SARAH LUBBERS AND CHRIS RUSCHE, GRAND VALLEY STATE...Ch. 13 - Prob. 4.5CQCh. 13 - Prob. 1OTQCh. 13 - Prob. 2OTQCh. 13 - Prob. 3OTQCh. 13 - Prob. 4OTQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is ‘data’? i. Number of items in inventory in the store were 3,000 ii. Value of items in the store was OMR 5,000 iii. Total items with value OMR 1,500 to OMR 3,000 were 500arrow_forwardIs proper cost of storage is necessary? 1-True 2-Falsearrow_forwardThe injection molding department of a company uses an average of 30 gallons of special lubricanta day. The supply of the lubricant is replenished when the amount on hand is 170 gallons. It takesfour days for an order to be delivered. Safety stock is 50 gallons, which provides a stockout risk of9 percent. What amount of safety stock would provide a stockout risk of 3 percent? Assumenormality.arrow_forward
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- "If the demand for a good decreases when a consumer's income rises, the demand for that good must decrease when its price rises". This statement is valid for Nora's demand for cheese. This statement is not valid for Chris' demand for pasta. Q1 a) Using an appropriate model with a diagram, explain in detail Nora's demand for cheese.arrow_forwardA company replaces its SKU’s at a rate of 25 pcs a day. In the past this qty tended to vary normally & have a std dev of 3 units per day. SKU’s are ordered from XYZ Supplier. LT is normally distributed with an average of 10 days & std dev of 2 days. What ROP should be used to achieve a service level of 95%.arrow_forwardTrue or False 1. Discrete production losses are assumed to occur at the specific point in production process and it will be detected only when the firm performed a quality control inspection 2. The costs of abnormal, continuous loss units are absorbed by completed and remaining inventory units 3. The costs of the normal continuous lost units are absorbed by the started in process finished and transferred units and remaining work in process inventoryarrow_forward
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