Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Chapter 19, Problem 11PA
You manage a project with 10 activities. Activities A1, A3, A5, and A9 form the critical path. Because you have a large budget for the project, you consider crashing activity A2, which has the potential to shorten the time of A2 by three days. What do you think about this opportunity?
- a. It is a good idea because it will reduce the project duration by three days.
- b. It is a bad idea because A2 is not on the critical path.
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You manage a project with 10 activities. Activities A1, A3, A5, and A9 form the critical path.Because you have a large budget for the project, you consider crashing activity A2, which hasthe potential to shorten the time of A2 by three days. What do you think about this opportunity?a. It is a good idea because it will reduce the project duration by three days.b. It is a bad idea because A2 is not on the critical path.
Assume that the activities in Problem 3.11 have the
following costs to shorten: A, $300/week; B, $100/week; C, $200/
week; E, $100/week; and F, $400/week. Assume also that you can
crash an activity down to 0 weeks in duration and that every week
you can shorten the project is worth $250 to you. What activities
would you crash? What is the total crashing cost?
Note: The attached photos is the activities in problem 3.11.
A project consists of three tasks: A, B, and C. Task A is known to take five days forsure. Tasks B and C are each dependent on A. B takes five days. C takes seven dayswith a probability of 0.5 and three days with a probability of 0.5. What is the expectedcompletion time of the project?a. 8 daysb. 10 daysc. 11 daysd. 12 days
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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- Hi, I need help answering the last question. Rob Smith is managing a small project at Boston University. He is under pressure to shorten the overall duration of the project by 4 weeks and he wants to do so at the lowest cost possible. In order to meet this objective a number of activities must be crashed. Activity Normal Time (weeks) Crashed Time (weeks) Normal Cost Crashed Cost Predecessor(s) A 5 3 $800 $1,200 - B 6 5 $300 $450 - C 6 5 $550 $775 - D 3 2 $750 $950 A E 6 3 $1,350 $2,250 C F 5 3 $675 $875 B What is the total cost of crashing the project 4 weeks (just the additional cost, not total project cost)? (Display your answer to two decimal places.)arrow_forwardAccording to Goldratt’s critical chain theory, what should you do in order to reduce risk in project schedules? A: Start activities in the feeder chains as late as possible. B: Add buffers to the critical chains. C: Start activities in the critical chains as early as possible. D: Start activities in the feeder chains as early as possible. 2. You are adding duration buffers that are non-workable schedule activities to manage uncertainty in your project schedule. What tool or technique are you using? A: Parametric estimating B: Critical path method C: Three-point estimating D: Critical chain methodarrow_forwardWhen an activity has to be crashed, the following have to beconsidered:a) the inherent risks involved in crashing particular activitiesneed to be considered, as some activities are riskier to crashthan othersb) the timing of activities needs to be consideredc) crashing frequently results in overallocation of resourcesand impacts the morale and motivation of the project teamd) all of the abovearrow_forward
- Project crashing is when you shorten the duration of a project by reducing the time of one or more tasks. Crashing is done by increasing the resources to the project, which helps make tasks take less time than what they were planned for. Of course, this also adds to the cost of the overall project. Therefore, the primary objective of project crashing is to shorten the project while also keeping costs at a minimum. What are the different options for crashing an activity when resources are not constrained ?arrow_forwardFor this assignment, you will design a risk management plan for a project titled “prolonged waiting times for patients in a large outpatient hospital” that will include the following elements: Risk Register/Matrix (list of at least 5 (five) risks along with the associated impact and probability scores along with risk score) Contingency plan (list of any risks you will plan for in advance along with what triggers the contingency). Be sure to include any information useful to stakeholders on the rationale for the creation of these elements as well as any outside references supporting the risk management plan.arrow_forwardI'm sorry, I need help with this question to the above problem What is the total cost of crashing the project from its original duration to 11 weeks?arrow_forward
- If the company wants to complete the project in 40 weeks,which activities should be crashed? Calculate the additional costincurred to complete the project in 40 weeks.arrow_forwardA project is a set of activities with a defined start point and a defined end state, which pursues a defined goal and uses a defined set of resources. The question that must always be asked before a project is started is, "“How is the project going to be planned and controlled?" For a project to be successful, there are 5 stages that need to be implemented. You have been appointed as the project manager for a project at you workplace to reduce downtime and you need to demonstrate your understanding of project planning and controlling by describing the 5 stages in detail and explain how you would implement it at your workplace.arrow_forwardDan, the project manager, has indicated in a planning meeting that the team should identify and avoid any circumstances of ‘scope creep.’ What does Dan means? Select one: a. He does not want the team members to discuss the project scope with other project stakeholders b. He wants to be the only person responsible for scope management throughout the project duration c. He wants the team members to make any changes to the project scope that they deem necessary d. He does not want the continuous or uncontrolled growth and changes in the project's scope at any point after the project beginsarrow_forward
- A project has four major activities. Activity A precedes activity B, activity C precedes activity D. 3-point estimates for activities are A(4, 8, 12 ), B( 3, 6, 9 ), C( 1, 2, 3 ), D( 6, 12, 18 ) weeks. What probability would you assign to a project duration of more than 14 weeks? O a. 0.402 O b. 0.949 O c. 0.75 O d. 0.5arrow_forwardProject Scope Management includes the processes required to ensure that the project includes all the work required, andonly the work required, to complete the project successfully (Project Management Institute, 2017:129).By referring to the project scope management process, discuss how the case study project scope could have been definedmore efficiently by specifically referring to plan scope management.arrow_forwardYou are managing a project. The project has a budget of $1500. The project is 45% complete. The project is a 3-month project. You planned to spend $600 per month (have $600 worth of work completed each month). What is the value for SPI at the end of the first month? What is the earned value term for "How much was the project supposed to cost."? Iarrow_forward
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