Use Appendix 14A EShack sells an ergonomic keyboard in one of its stores. Average weekly demand for this keyboard follows a Poisson distribution with mean 0.6 unit. It submits orders to the supplier weekly and the supplier delivers with a 1-week lead time. (Round your answer to 1 decimal place.) a. Suppose it uses an order-up-to level of 5. What is its average order quantity? (Round your answer to 1 decimal place.) b. Suppose it uses an order-up-to level of 9. What is its expected on-hand inventory? (Round your answer to 1 decimal place.) c. Suppose it uses an order-up-to level of 6. What is its expected on-order inventory? (Round your answer to 4 decimal places.) d. Suppose it uses an order-up-to level of 7. What is its in-stock probability? (Round your answer to 4 decimal places.) e. Suppose it uses an order-up-to level of 4. What is its stockout probability? 1. Suppose it wants a 1 in-stock probability. What should its order-up-to level be? 100000

Use Appendix 14A EShack sells an ergonomic keyboard in one of its stores. Average weekly demand for this keyboard follows a Poisson distribution with mean 0.6 unit. It submits orders to the supplier weekly and the supplier delivers with a 1-week lead time. (Round your answer to 1 decimal place.) a. Suppose it uses an order-up-to level of 5. What is its average order quantity? (Round your answer to 1 decimal place.) b. Suppose it uses an order-up-to level of 9. What is its expected on-hand inventory? (Round your answer to 1 decimal place.) c. Suppose it uses an order-up-to level of 6. What is its expected on-order inventory? (Round your answer to 4 decimal places.) d. Suppose it uses an order-up-to level of 7. What is its in-stock probability? (Round your answer to 4 decimal places.) e. Suppose it uses an order-up-to level of 4. What is its stockout probability? 1. Suppose it wants a 1 in-stock probability. What should its order-up-to level be? 100000

Purchasing and Supply Chain Management

6th Edition

ISBN:9781285869681

Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Publisher:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson

Chapter16: Lean Supply Chain Management

Section: Chapter Questions

Problem 10DQ: The chapter presented various approaches for the control of inventory investment. Discuss three...

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A company operates for 50 weeks a year and uses a fixed quantity inventory system for one of its most important items. Below are the characteristics for the item: Weekly demand follows normal distribution: mean of 400 units and standard deviation of 100 units Order Cost = $40 per order Annual Holding cost = $2/unit/year Desired service level = 95% (z = 1.645) Lead Time = 4 weeks Economic Order Quantity (EOO) = 894 units Now suppose that the management is considering switching to a fixed time inventory system where the time between orders is 2 weeks. Everything else being the same as the information provided for the original problem, which system (Q or P system) is likely to have more safety stock? Please explain why.
A building materials stockist obtains its cement from a single supplier. Demandfor cement is reasonably constant throughout the year. Last year the company sold 2 000tonnes of cement. It estimates the costs of placing an order at around 25 MU each timean order is placed and charges inventory holding at 20% of purchase cost. The companypurchases cement at 60 MU per tonne.a) How much cement should the company order at a time?b) Instead of ordering EOQ, why not a order convenient 100 tonnes? Please mention formulas and do it in detail so I can understand.
A golf specialty wholesaler operates 50 weeks per year. Management is trying to determine an inventory policy for its 1-irons, which have the following characteristics:Demand (D) = 2,000 units/yearDemand is normally distributedStandard deviation of weekly demand = 3 unitsOrdering cost = $40/orderAnnual holding cost (H) = $5/unitsDesired cycle-service level = 90 percentLead time (L) = 4 weeksa. If the company uses a periodic review system, what should P and T be? Round P to the nearest week.b. If the company uses a continuous review system, what should R 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?
Given this information:Lead-time demand = 615 poundsStandard deviation of lead time demand = 48 pounds (Assume normality.)Acceptable stockout risk during lead time = 4 percentUse Table. a. What amount of safety stock is appropriate? (Round your answer to the nearest whole number.) Safety stock units b. How much of this item should be reordered? (Round your answer to the nearest whole number.) ROP units c. What risk of stockout would result from a decision not to have any safety stock? (Omit the "%" sign in your response.) Stockout risk %
Kabel Market store sells electric cable. The demand for cable is normally distributed. The inventory related information at Kabel Market is as follows: Average Annual Demand = 16,900 meters Standard deviation of weekly demand = 28 meters Cable selling price = AMD 640.00 per meter Ordering cost = AMD 1,250.00 per order Lead time = 5 weeks Annual inventory-holding cost estimate = 2.5% of the cable selling price Required service level = 95% Kabel Market works 52 weeks a year. Note: The approximate z values are: for 0.9 ≈ 1.28, for 0.92 ≈ 1.405, for 0.95 ≈ 1.645, for 0.98 ≈ 2.05. Suppose the bar management practices the fixed-QUANTITY ordering system with the use of the economic order quantity. Answer the following questions: (i) How many meters of cable they order from the supplier each time? (ii) When do they place an order? (iii) What is the safety stock?
A printing company anticipates using 40,000 reams of paper at a uniform rate over the next year. Each time they place an order for X units of reams of paper, it is charged a flat fee of $200. Carrying costs are $4 per unit per year. A. use the formula for Economic Order Quantity to find out how many reams of paper they should purchase in each order. B. how many orders should they place over the year?
Nationwide Auto Parts uses a periodic review inventory control system for one of its stock items. The review interval is 6 weeks, and the lead time for receiving the materials ordered from its wholesaler is 3 weeks. Weekly demand is normally distributed, with a mean of 100 units and a standard deviation of 20 units.a. What is the average and the standard deviation of demand during the protection interval?b. What should be the target inventory level if the firm desires 97.5 percent stockout protection?c. If 350 units were in stock at the time of a periodic review, how many units should be ordered?
Part 1 Sam's Pet Hotel operates 52 weeks per year, 6 days per week, and uses a continuous review inventory system. It purchases kitty litter for $13.00 per bag. The following information is available about these bags: Demandequals=75 bags/week Orde costequals=$55.00/order Annual holding costequals=35 percent of cost Desired cycle-service levelequals=80 percent Lead timeequals=4 weeks (24 working days) Standard deviation of weekly demand equals=15 bags Current on-hand inventory is 320 bags, with no open orders or backorders. Part 2 a. Suppose that the weekly demand forecast of 75 bags is incorrect and actual demand averages only 50 bags per week. How much higher will total costs be, owing to the distorted EOQ caused by this forecast error? The costs will be ___ higher owing to the error in EOQ. (Enter your response rounded to two decimal places.)
1.) A firm orders on average 400 wheels each month. Demand is normally distributed with standard deviation of the monthly demand being 20 wheels. The ordering cost is $8 per order. The cost to buy one wheel is $4 per wheel. Annual carrying costs are 50% of unit cost. The supplier lead time is 2 operating days. The firm operates 240 days per year, in other word, the firm operates 20 days each month. Each order is received from the supplier in a single delivery. There are no quantity discounts. Write your answer and then Round your answer up to the nearest number for future calculation. (e.g 9.6 => 10). Please clearly write down the formulation and calculation for your answers. Note: Here I make the time measures bolded for you to make you pay the attention to their differences. Please notice the difference in times measure units, so that you do not make mistake by doing calculations with different time measures. You need to convert the data to the same time measures before doing any…
1.) A firm orders on average 400 wheels each month. Demand is normally distributed with standard deviation of the monthly demand being 20 wheels. The ordering cost is $8 per order. The cost to buy one wheel is $4 per wheel. Annual carrying costs are 50% of unit cost. The supplier lead time is 2 operating days. The firm operates 240 days per year, in other word, the firm operates 20 days each month. Each order is received from the supplier in a single delivery. There are no quantity discounts. Write your answer and then Round your answer up to the nearest number for future calculation. (e.g 9.6 => 10). Please clearly write down the formulation and calculation for your answers. Note: Here I make the time measures bolded for you to make you pay the attention to their differences. Please notice the difference in times measure units, so that you do not make mistake by doing calculations with different time measures. You need to convert the data to the same time measures before doing any…
1.) A firm orders on average 400 wheels each month. Demand is normally distributed with standard deviation of the monthly demand being 20 wheels. The ordering cost is $8 per order. The cost to buy one wheel is $4 per wheel. Annual carrying costs are 50% of unit cost. The supplier lead time is 2 operating days. The firm operates 240 days per year, in other word, the firm operates 20 days each month. Each order is received from the supplier in a single delivery. There are no quantity discounts. Write your answer and then Round your answer up to the nearest number for future calculation. (e.g 9.6 => 10). Please clearly write down the formulation and calculation for your answers. Note: Here I make the time measures bolded for you to make you pay the attention to their differences. Please notice the difference in times measure units, so that you do not make mistake by doing calculations with different time measures. You need to convert the data to the same time measures before doing any…