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The basic EOQ model ignores the purchasing cost.

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The rate of demand is an important factor in determining the ROP.

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Daily usage is exactly 60 gallons per day. Lead time is normally distributed with a mean of 10 days and a standard deviation of 2 days. What is the standard deviation of demand during lead time?


A) 60 times 2
B) 60 times the square root of 2
C) 60 times the square root of 10
D) 60 times 10
E) 10 times the square root of 2

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In the basic EOQ model, if annual demand is 50, carrying cost is $2, and ordering cost is $15, EOQ is approximately:


A) 11.
B) 20.
C) 24.
D) 28.
E) 375.

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The Operations Manager for Shadyside Savings & Loan orders cash from her home office for her very popular "BIG BUCKS" automated teller machine, which only dispenses $100 bills. She estimates that this machine dispenses an average of 12,500 bills per month, and that carrying a bill in inventory costs 10 percent of its value annually. She knows that each order for these bills costs $300 for clerical and armored car delivery costs, and that order lead time is six days. Assuming a 30-day month, if she were to order 6,000 bills at a time, what would be the length of an order cycle?


A) .48 days
B) 2.08 days
C) 6 days
D) 8.4 days
E) 14.4 days

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When carrying costs are stated as a percentage of unit price, the minimum points on the total cost curves:


A) line up.
B) equal zero.
C) do not line up.
D) cannot be calculated.
E) depend on the percentage assigned.

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In the quantity discount model, if holding costs are given as a percentage of unit price, a graph of the total cost curves will have the same EOQ for each curve.

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Interest, insurance, and opportunity costs are all associated with holding costs.

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Carrying cost is a function of order size; the larger the order quantity, the higher the inventory carrying cost.

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It is critical that the exact quantity calculated in the EOQ model be ordered.

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With an A-B-C system, an item that had a high demand but a low annual dollar volume would probably be classified as:


A) A.
B) B.
C) C.

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The manager of the Quick Stop Corner Convenience Store (which never closes) sells four cases of Stein beer each day. Order costs are $8.00 per order, and Stein beer costs $.80 per six-pack (each case of Stein beer contains four six-packs) . Orders arrive three days from the time they are placed. Daily holding costs are equal to 5 percent of the cost of the beer. If he were to order 16 cases of Stein beer at a time, what would be the length of an order cycle?


A) .25 days
B) 3 days
C) 1 day
D) 4 days
E) 20 days

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The objective of inventory management is to minimize the cost of holding inventory.

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Monitoring inventory turns over time can be used as a measure of performance.

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A nonlinear cost related to order size is the cost of:


A) interest.
B) insurance.
C) taxes.
D) ordering.
E) space.

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If no variations in demand or lead time exist, the ROP will equal:


A) the EOQ.
B) expected usage during lead timE.
C) safety stock.
D) the service level.
E) the EOQ plus safety stock.

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A quantity discount will lower the reorder point.

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Decoupling operations means to break the linkage between two sequential operations.

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Lead time is exactly 20 days long. Daily demand is normally distributed with a mean of 10 gallons per day and a standard deviation of 2 gallons. What is the standard deviation of demand during lead time?


A) 20 times 2
B) 20 times 10
C) 2 times the square root of 20
D) 2 times the square root of 10
E) 400 times the square root of 10

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Which item would be least likely to be ordered under a fixed-order-interval system?


A) textbooks at a college bookstore
B) auto parts at an assembly plant
C) cards at a gift shop
D) canned peas at a supermarket
E) magazines at a news stand

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