Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
9th Edition
ISBN: 9781119371618
Author: Roberta S. Russell
Publisher: Wiley (WileyPLUS Products)
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Chapter 9, Problem 5Q
What is slack, and how is it computed?
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Discuss in brief slack variables?
What is an Aggregate Project plan?
Teloxy Engineering (A)
Teloxy Engineering has received a onetime contract to design and build 10 000 units of a new product. During the proposal
process, management felt that the new product could be designed and manufactured at a low cost. Some members felt
that it would be more economical to purchase the product for R200 each in the marketplace, with an extra R20 per unit
handling of the 10 000 units.
The Management team set up a meeting with the manufacturing team to see if they can manufacture the component at a
cheaper price than buying it from the outside. The manufacturing team informs them that it can produce a maximum of
10,000 units, just enough to fulfil the contract. The setup cost will be R100 000 and the raw material cost is R120 per
component. Since Teloxy has never manufactured this product before, manufacturing expects the following defects:
% defective
10
20
30
40
Probability of occurrence (%)
10
20
30
25
15
All defective units must be removed and repaired at a cost…
Chapter 9 Solutions
Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
Ch. 9 - Why is CPM/PERT a popular and widely applied...Ch. 9 - What is the purpose of a CPM/PERT network?Ch. 9 - Why are dummy activities used in a CPM/PERT...Ch. 9 - What is the critical path, and what is its...Ch. 9 - What is slack, and how is it computed?Ch. 9 - How are the mean activity times and activity...Ch. 9 - How is total project variance determined in...Ch. 9 - What is the purpose of project crashing analysis?Ch. 9 - Describe the process of manually crashing a...Ch. 9 - Which method for determining activity time...
Ch. 9 - Explain how a Gantt chart differs from a CPM/PERT...Ch. 9 - Discuss the relationship of direct and indirect...Ch. 9 - Describe the limitations and disadvantages of...Ch. 9 - Describe the difference between activity-on-node...Ch. 9 - Identify and briefly describe the major elements...Ch. 9 - Select an everyday project you are familiar with...Ch. 9 - Prepare a WBS for a spaghetti with meatballs...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Construct a Gantt chart for the project described...Ch. 9 - Use the project activities that follow to...Ch. 9 - Construct a network from the information in the...Ch. 9 - For the network in Problem 9.4, determine the...Ch. 9 - Given the following network with activity times in...Ch. 9 - Given the following network with activity times in...Ch. 9 - A marketing firm is planning to conduct a survey...Ch. 9 - In one of the little-known battles of the Civil...Ch. 9 - A group of developers is building a new shopping...Ch. 9 - The management of a factory is going to erect a...Ch. 9 - Given the following network and probabilistic...Ch. 9 - The Farmers American Bank of Leesburg is planning...
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- How do we calculate slack?arrow_forwardGiven the manpower allocation table of a Project, determine how many days do the peak manpower requirement without implementing any manpower leveling would occur? Activity A-101 A-102 B-101 15 15 15 15 15 15 15 A-103 C-101 C-102 B-102 B-103 A-104 D-101 D-102 B-104 MANPOWER ALLOCATION PROJECT DURATION (WEEKS) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 20 20 20 20 20 20 20 20 20 20 20 25 25 25 25 A-104 D-101 D-102 B-104 30 30 30 30 30 30 30 30 Activity A-101 A-102 B-101 15 15 15 15 15 15 15 A-103 C-101 C-102 B-102 B-103 30 30 30 30 30 15 15 15 15 15 . Given the manpower allocation table of a Project, determine what is the recommended minimum constant manpower requirement per week? 15 15 15 15 15 30 30 30 30 30 30 30 30 30 30 30 30 30 30 10 10 10 10 10 25 25 25 25 25 25 10 10 10 10 MANPOWER ALLOCATION PROJECT DURATION (WEEKS) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 25 25 25 25…arrow_forwardHow is slack/float calculated? Latest finish date – duration Latest start date – earliest start date Earliest start date + duration earliest start date - Latest start datearrow_forward
- What is meant by the need to make trade-offs between cost, performance, and schedule? Give examples.arrow_forwardRequired: Develop a schedule for hiring new employees. What is thetotal cost of this schedule?arrow_forwardWhich method for determining activity time estimates,deterministic or probabilistic, do you perceive to be preferable? Explain.arrow_forward
- Single time estimate vs. Three-time estimatearrow_forwarda) Provide FOUR (4) key decisions invalidating priority rankings in Project PortfolioManagement.b) Determining the location where to deploy the initial Project Portfolio Management (PPM) process is critical. Identify FIVE (5) main areas how the business can kick-start the Project Portfolio Management (PPM) process.c) Resource decisions are plagued with difficult challenges. The common pitfalls, in most companies; there are too many projects and not enough resources, and mismatches of skill-sets. Hence, mapping resource and demand is crucial. List any SIX (6) activities in conducting a resources assessment.d) Project Portfolio Management Team (PPMT)'s process activities must be integrated with other existing processes, with its interdependent relationships within and between product/service development processes and project management processes. Explain FOUR (4) main tasks of PPMT in establishing corporate visibility.arrow_forwardMOORE HOUSING CONTRACTORS Moore Housing Contractors is negotiating a deal with Countryside Realtors to build six houses in a new develop- ment. Countryside wants Moore Contractors to start in late winter or early spring, when the weather begins to moder- ate, and build on through the summer and into the fall. The summer months are an especially busy time for the realty company, and it believes it can sell the houses almost as soon as they are ready, and maybe even before. The houses all have similar floor plans and are of approximately equal size; only the exteriors are noticeably different. The comple- tion time is so critical for Countryside Realtors that it is insisting that a project management network accompany the contractor's bid for the job, with an estimate of the comple- tion time for a house. The realtor also needs to be able to plan its offerings and marketing for the summer. It wants each house to be completed within 45 days after it is started. Activity b C d f 8 h i j k…arrow_forward
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