OPERATIONS MANAGEMENT
2nd Edition
ISBN: 9781260238877
Author: CACHON
Publisher: RENT MCG
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Textbook Question
Chapter 19, Problem 1CQ
A project has four activities that take 4, 3, 6, and 7 days, respectively. What is the total completion time for the project?
- a. 3 days, because this is the minimum time
- b. 7 days, because this is the maximum time
- c. 20 days, because this is the sum of the times
- d. It is not possible to determine the total completion time from the given information.
Expert Solution & Answer
Summary Introduction
To determine: The total completion time for the project.
Answer to Problem 1CQ
D. It is not possible to determine the total completion time from the given information.
Explanation of Solution
Given information:
Four activities of a project take 4, 3, 6 and 7 days respectively.
The given scenario lacks basic information to find the completion time of the project. Details like precedence relationship is not given which makes it impossible to find the sequence of activities in which the project must be done.
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Part 1
Oakwood Hospital is considering using ABC analysis to classify laboratory SKUs into three categories: those that will be delivered daily from their supplier (Class A items), those that will be controlled using a continuous review system (B items), and those that will be held in a two bin system (C items).
The following table shows the annual dollar usage for a sample of eight SKUs. Fill in the blanks for annual dollar usage below. (Enter your responses rounded to the nearest whole number.)
Part 2
Rank the SKUs in descending order on the basis of their annual dollar usage and fill in the table with the ranked SKU's percentage of dollar usage. (Enter your responses rounded to two decimal places.)
Sam's Pet Hotel operates 51 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:
> Demand 70 bags/week
> Order cost $58.00/order
> Annual holding cost 30 percent of cost
> Desired cycle-service level = 80 percent
>Lead time 4 weeks (24 working days)
> Standard deviation of weekly demand = 15 bags
> Current on-hand inventory is 320 bags, with no open orders or backorders.
a. Suppose that the weekly demand forecast of 70 bags is incorrect and actual demand averages only 45 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.)
a. The average aggregate inventory value of the product if Ruby-Star used vendor 1 exclusively is
$enter your response here. (Enter your response as a whole
number.)
b. The aggregate inventory value of the product if Ruby-Star used vendor 2 exclusively is shown below.
c. How would your analysis change if average weekly demand increased to 160 units per week? The aggregate inventory values are shown below.
Chapter 19 Solutions
OPERATIONS MANAGEMENT
Ch. 19 - A project has four activities that take 4, 3, 6,...Ch. 19 - Consider the simple dependency matrix shown in...Ch. 19 - Consider a project with two activities that are...Ch. 19 - Prob. 4CQCh. 19 - Prob. 5CQCh. 19 - Prob. 6CQCh. 19 - Prob. 7CQCh. 19 - Prob. 8CQCh. 19 - Prob. 9CQCh. 19 - Prob. 10CQ
Ch. 19 - Consider two projects that have the same...Ch. 19 - Prob. 12CQCh. 19 - Prob. 13CQCh. 19 - Prob. 14CQCh. 19 - The key objectives of a project are given by a....Ch. 19 - Which of the following descriptions best captures...Ch. 19 - Prob. 1PACh. 19 - Prob. 2PACh. 19 - Prob. 3PACh. 19 - Prob. 4PACh. 19 - A project activity has an earliest completion time...Ch. 19 - What is the definition of the latest completion...Ch. 19 - Which of the following statements is correct with...Ch. 19 - A project consists of three tasks: A, B, and C....Ch. 19 - Prob. 9PACh. 19 - Prob. 10PACh. 19 - You manage a project with 10 activities....Ch. 19 - Which of the following activities is not part of...Ch. 19 - You have been asked by the CEO of your company to...Ch. 19 - BUILDING A HOUSE IN THREE HOURS Habitat for...Ch. 19 - BUILDING A HOUSE IN THREE HOURS Habitat for...
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