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If daily demand is normally distributed with a mean of 15 and standard deviation of 5, and lead time is constant at 4 days, 90% service level will require safety stock of approximately


A) 7 units.
B) 10 units.
C) 13 units.
D) 16 units.
E) 26 units.

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If demand is not uniform and constant, then stockout risks can be controlled by all of the following except


A) increasing the EOQ.
B) placing an extra order.
C) raising the selling price to reduce demand.
D) adding safety stock.
E) reducing the reorder point.

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When quantity discounts are allowed, the cost-minimizing order quantity


A) is always an EOQ quantity.
B) minimizes the sum of holding and ordering costs.
C) minimizes the unit purchase price.
D) may be a quantity below that at which one qualifies for that price.
E) minimizes the sum of holding, ordering, and product costs.

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What is cycle counting?

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Cycle counting is an...

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A product has demand of 4000 units per year. Ordering cost is $20 and holding cost is $4 per unit per year. The EOQ model is appropriate. The cost-minimizing solution for this product will cost ________ per year in total annual inventory costs.


A) $400
B) $800
C) $1200
D) Zero; this is a class C item.
E) Cannot be determined because unit price is not known.

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A product whose EOQ is 40 experiences a decrease in ordering cost from $90 per order to $10. The revised EOQ is


A) three times as large.
B) one-third as large.
C) nine times as large.
D) one-ninth as large.
E) cannot be determined.

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Which of the following statements about ABC analysis is false?


A) ABC analysis is based on the presumption that controlling the few most important items produces the vast majority of inventory savings.
B) In ABC analysis, "A" Items are tightly controlled, have accurate records, and receive regular review by major decision makers.
C) In ABC analysis, "C" Items have minimal records, periodic review, and simple controls.
D) ABC analysis is based on the presumption that all items must be tightly controlled to produce important cost savings.
E) In ABC analysis, "B" items are not as tightly controlled as "A" items.

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Cycle counting


A) is a process by which inventory records are verified once a year.
B) provides a measure of inventory accuracy.
C) provides a measure of inventory turnover.
D) assumes that all inventory records must be verified with the same frequency.
E) assumes that the most frequently used items must be counted more frequently.

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Demand for a product is relatively constant at five units per day. Lead time for this product is normally distributed with a mean of ten days and a standard deviation of three days. a. What reorder point provides a 50% service level? b. What reorder point provides a 90% service level? c. If the lead time standard deviation can be reduced from 3 days to 1, what reorder point now provides 90% service? How much is safety stock reduced by this change?

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This problem requires formula 12-16 sinc...

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Which of the following is a requirement of Q systems?


A) perpetual inventory system
B) constant order spacing
C) variable lead time
D) constant demand
E) periodic inventory system

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ABC analysis is based upon the principle that


A) all items in inventory must be monitored very closely.
B) there are usually a few critical items, and many items which are less critical.
C) an item is critical if its usage is high.
D) more time should be spent on class "C" items because there are more of them.
E) as with grade distributions in many MBA courses, there should be more medium-level "B" items than either "A" or "C" items.

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Which of the following statements regarding the reorder point is not true?


A) The reorder point is that quantity that triggers an action to restock an item.
B) There is a reorder point even if lead time and demand during lead time are constant.
C) The reorder point is larger than d × L if safety stock is present.
D) The fixed-period model has no reorder point.
E) The re-order point is not determinable.

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Montegut Manufacturing produces a product for which the annual demand is 10,000 units. Production averages 100 per day, while demand is 40 per day. Holding costs are $2.00 per unit per year; set-up costs $200.00. If they wish to produce this product in economic batches, what size batch should be used? What is the maximum inventory level? How many order cycles are there per year? How much does management of this good in inventory cost the firm each year?

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This problem requires economic order qua...

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One advantage of cycle counting is that it maintains accurate inventory records.

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List the typical components that constitute inventory holding or carrying costs.

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Typical components of inventor...

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Which of these statements about the production order quantity model is false?


A) The production order quantity model is appropriate when the assumptions of the basic EOQ model are met, except that receipt is noninstantaneous.
B) Because receipt is noninstantaneous, some units are used immediately, not stored in inventory.
C) Average inventory is less than one-half of the production order quantity.
D) All else equal, the smaller the ratio of demand rate to production rate, the larger is the production order quantity.
E) The production order quantity assumes units are produced and sold simultaneously.

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Daily demand for a product is normally distributed with a mean of 55 units and a standard deviation of 6 units. The firm currently uses a reorder point system, and seeks a 75% service level during the lead time of 4 days. a. What safety stock is appropriate for the firm? b. What is the reorder point?

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SS = 0.67 ∙ 6∙ SQRT ...

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Which of the following statements regarding the production order quantity model is true?


A) It applies only to items produced in the firm's own production departments.
B) It relaxes the assumption that all the order quantity is received at one time.
C) It relaxes the assumption that the demand rate is constant.
D) It minimizes the total production costs.
E) It minimizes inventory.

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If the standard deviation of demand is six per week, demand is 50 per week, and the desired service level is 95%, approximately what is the statistical safety stock?


A) 8 units
B) 10 units
C) 16 units
D) 64 units
E) Cannot be determined without lead time data.

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ABC analysis is based on the presumption that carefully controlling all items is necessary to produce important inventory savings.

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