Freeport Corporation finds that demand for surfboards has average demand of 21 units per day, with a standard deviation of 3 units. Lead time from the supplier averages 14 days, with a standard deviation of 2 days. The item costs $61 and the inventory carrying cost is 25 percent. Use Table 7-2. a. Suppose management decides to offer a 97.5 percent service level; that is, it is willing to experience a stockout probability of 2.5 percent during the order cycle. How much safety stock should be carried? (Do not round intermediate calculations. Round up your answer to the next whole number.) Safety stock units b. How much is the annual inventory carrying cost of the safety stock because of this decision? (Round your answer to the nearest dollar amount.) Annual inventory carrying cost c. You decide that you want this company to give better service to its customers. You decide that a 97.72 percent service level is appropriate. How much safety stock must be carried to offer this service level? (Do not round intermediate calculations. Round up your answer to the next whole number.) Safety stock units

Freeport Corporation finds that demand for surfboards has average demand of 21 units per day, with a standard deviation of 3 units. Lead time from the supplier averages 14 days, with a standard deviation of 2 days. The item costs $61 and the inventory carrying cost is 25 percent. Use Table 7-2. a. Suppose management decides to offer a 97.5 percent service level; that is, it is willing to experience a stockout probability of 2.5 percent during the order cycle. How much safety stock should be carried? (Do not round intermediate calculations. Round up your answer to the next whole number.) Safety stock units b. How much is the annual inventory carrying cost of the safety stock because of this decision? (Round your answer to the nearest dollar amount.) Annual inventory carrying cost c. You decide that you want this company to give better service to its customers. You decide that a 97.72 percent service level is appropriate. How much safety stock must be carried to offer this service level? (Do not round intermediate calculations. Round up your answer to the next whole number.) Safety stock units

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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Suppose that we would like to determine Reorder Point for the product. From the historical data the manager determined demand during lead-time for that product fits Normal distribution with a mean of 200 and standard deviation of 10 products. The maximum stock out risk is 10%. Answer the following questions according to the (Q, R) system. a) Find the safety stock if the lead time is 2 weeks. b) Find the reorder point. c) Find the reorder point if the stock out risk decreases to 1%. Comment on the result.
I need a detailed explanation on how to solve this problem: A paint shop implements an inventory policy on its stock of white paint, which costs the store $6 per can. Monthly demand for cans of white paint is normal with mean 28 and standard deviation 8. The replenishment lead time is 14 weeks. Excess demand is backordered, but costs $10 per back ordered can in labor and loss of goodwill. There is a fixed cost of $15 per order, and the holding cost is based on 30% interest rate per annum. In your computations, assume 4 weeks per month. - Write down the model name and parameters. - What are the optimal lot size and reorder points for white paint (include the formulas)? - What is the optimal safety stock (include the formula)? *** Suppose the paint shop from the above problem adopts a service level policy. - What are the optimal lot size and reorder points for white paint, such that 90% of the cycles are filled without backordering (include all formulas)? - What is the fill rate…
Lumumba Carpet Discount Store sells Super Shag carpet. The average daily customer demand for the carpet stocked by the store is normally distributed, with a mean daily demand of 30 metres and a standard deviation of 5 metres of carpet per day. The lead time for receiving a new order of carpet is 10 days. Advice the the store if they desire a reorder point and safety stock for a service level of 95%, with the probability of a stockout equal to 5%.
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 2
Do you think the safety stock (safety inventory) could be negative? What is the meaning of a negative safety inventory (hint: safety stock is the difference between the optimal inventory and the average demand)?
Daily demand for product sample kits is normally distributed with a mean of 35 units and a standard deviation of 4. Supply is virtually certain with a lead time of 9 days. The cost of placing an order is $20, and annual carrying costs for one kit is 25 percent. The price of one kit is $12.50. Assume a year has 365 days.If a 99% service level is desired, what is average inventory on hand? If demand had no variation, what would the reorder point be?
You are in charge of inventory control of a highly successful product retailed by your firm. Weekly demand for this item varies, with an average of 200 units and a standard deviation of 16 units. It is purchased from a wholesaler at a cost of $12.50 per unit. You are using a continuous review system to control this inventory. The supply lead time is 4 weeks. Placingan order costs $50, and the inventory carrying rate per year is 20 percent of the item’s cost. Your firm operates 5 days per week, 50 weeks per year.a. What is the optimal ordering quantity for this item?b. How many units of the item should be maintained as safety stock for 99 percent protection against stockouts during an order cycle?c. If supply lead time can be reduced to 2 weeks, what is the percent reduction in the number of units maintained as safety stock for the same 99 percent stockout protection?d. If through appropriate sales promotions, the demand variability is reduced so that the standard deviation of weekly…
You are in charge of inventory control of a highly successful product retailed by your firm. Weekly demand for this item varies, with an average of 350 units and a standard deviation of 15 units. It is purchased from a wholesaler at a cost of $25.00 per unit. The supply lead time is 7 weeks. Placing an order costs $55.00, and the inventory carrying rate per year is 15 percent of the item's cost. Your firm operates 6 days per week, 50 weeks per year. Refer to the standard normal table The table below shows the total area under the normal curve for a point that is Z standard deviations to the right of the mean. Z 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.0 0.5000 0.5040 0.5080 0.5120 0.5160 0.5199 0.5239 0.5279 0.5319 0.5359 0.1 0.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.5636 0.5675 0.5714 0.5754 0.2 0.5793 0.5832 0.5871 0.5910 0.5948 0.5987 0.6026 0.6064 0.6103 0.6141…
I need answers A company uses on an average 216 parts a day with a standard deviation of 16 parts per day in a manufacturing process. Cost of placing and receiving an ordering is BDT 40,000. Estimated monthly carrying cost is BDT 90 per part. Orders are delivered approximately 7 days after being placed. The delivery time is normal with a mean of 7 days and a standard deviation of 2 days. The company is open 360 days per year. Find the order quantity that is economical. If the Company takes 3% stock out risk, then find safety stock (SS) quantity and Re-Order Point? 3.If the supplier offers a discount of BDT 8 per circuit board for purchasing of 4000 boards at a time, then financially evaluate and justify whether the company will go with the offer or not? 4.The person who orders the boards follows this rule: Order when the amount on…
Weiss’s paint store keeps an inventory of white latex paint product in the gallon size. The manager reviews the stock level every 4 months. Demand is observed to be normally distributed with a monthly mean of 28 gallons and a standard deviation of 8. Re-supply lead time is 2.5 months. The store manager targets a 98 percent in-stock probability during the lead time. • What is the target inventory position?
H & K Electronic Warehouse sells a 12-pack of AAA batteries, and this is a very popular item. Demand for this is normally distributed, with an average of 50 packs per day and a standard deviation of 16. The average delivery time is 5 days, with a standard deviation of 2 days. Delivery time has been found to be normally distributed. A 96% service level is desired. What is the standard deviation of demand during the lead time? How much safety stock should be carried, and what should be the reorder point
We have demand for a product with 1500 units/ month. The vendor offers. quantity discounted method for purchasing as the table below: Order Quantity condition Price (USD) 1+299 10 >300 7 Ordering lead-time is 3 days. Ordering cost 10 $/ order, salary for ordering staff is 3S/ order. Monthly Warehouse renting free is 5%, and interest rate is 7%. Salary for warehousing staff is 300$/month. Please suggest the best ordering policy. I