Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 18DQ
How can we determine the probability that a project will be completed by a certain date? What assumptions are made in this computation?
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How can we determine the probability that a project will be completed by a certain date? What assumptions are made in this computation?
What is the probability that the project will be completed by a specific date?
How do we estimate the likelihood of a project being finished by a certain date? In this calculation, what assumptions are made?
Chapter 3 Solutions
Operations Management
Ch. 3 - Give an example of a situation in which project...Ch. 3 - Explain the purpose of project organization.Ch. 3 - What are the three phases involved in the...Ch. 3 - What are some of the questions that can be...Ch. 3 - Define work breakdown structure. How is it used?Ch. 3 - What is the use of Gantt charts in project...Ch. 3 - What is the difference between an...Ch. 3 - What is the significance of the critical path?Ch. 3 - What would a project manager have to do to crash...Ch. 3 - Describe how expected activity times and variances...
Ch. 3 - Define earliest start, earliest Finish, latest...Ch. 3 - Students are sometimes confused by the concept of...Ch. 3 - What are dummy activities? Why are they used in...Ch. 3 - What are the three time estimates used with PERT?Ch. 3 - Would a project manager ever consider crashing a...Ch. 3 - How is the variance of the total project computed...Ch. 3 - Describe the meaning of slack, and discuss how it...Ch. 3 - How can we determine the probability that a...Ch. 3 - Name some of the widely used project management...Ch. 3 - The work breakdown structure (WBS) for building a...Ch. 3 - 3.2 Robert Day has decided to run for a seat as...Ch. 3 - Draw the activity-on-node (AON) project network...Ch. 3 - Given the activities whose sequence is described...Ch. 3 - 3.5 Using AOA, diagram the network described below...Ch. 3 - Stephen Hall is developing a program in supply...Ch. 3 - Task time estimates for the modification of an...Ch. 3 - 3.8 The City Commission of Nashville has decided...Ch. 3 - Refer to the table in Problem 3.8. a. Draw the AON...Ch. 3 - The activities needed to build a prototype laser...Ch. 3 - Dave Fletcher (see Problem 3.10) was able to...Ch. 3 - The activities described by the following table...Ch. 3 - A renovation of the gift shop at Orlando Amway...Ch. 3 - Kelle Carpet and Trim installs carpet in...Ch. 3 - The following is a table of activities associated...Ch. 3 - Assume that the activities in Problem 3.15 have...Ch. 3 - Bill Fennema, president of Fennema Hospitality,...Ch. 3 - What is the minimum cost of crashing the following...Ch. 3 - Three activities are candidates for crashing on a...Ch. 3 - Development of Version 2.0 of a particular...Ch. 3 - The estimated times and immediate predecessors for...Ch. 3 - Rich Cole Control Devices, Inc., produces...Ch. 3 - Four Squares Productions, a firm hired to...Ch. 3 - Using PERT, Adam Munson was able to determine that...Ch. 3 - Clark Products makes pizza ovens for commercial...Ch. 3 - The Tesla 6 is a new custom-designed sports car....Ch. 3 - TABLE 3.6 Southwestern University Project 1....Ch. 3 - TABLE 3.6 Southwestern University Project 2 What...Ch. 3 - TABLE 3.6 Southwestern University Project 3. If it...Ch. 3 - Project Management at Arnold Palmer Hospital Video...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - The equivalent of a new kindergarten class is born...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...Ch. 3 - At the Hard Rock Cafe, like many organizations,...
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- The following information has been computed from a project: Expected total project time = T = 62 weeks Project variance = 81 1- What is the probability that the project will be completed 18 weeks before its expected completion date? 2- Draw Normal Curve & Analysis your solution with conclusionarrow_forwardFrom the following data, calculate BAC, BCWS, BCWP, ACWP, EV, CV and SV when the Status Checking Date is May 5, 2017. Is the project over or under budget? By what percentage? Is the project behind or ahead of schedule? By what percentage? Project Status Status Checking Date 5/5/2017 Actual Effort Estimated Actual Completion Estimated Work Effort by Status Checking Date Completion Date Tasks Date (mm/dd/yy) (mm/dd/yy) (Person Days) (Person Days) 10 2/5/2017 2/5/2017 15 20 3/15/2017 3/25/2017 20 25 4/25/2017 4. 25 25 5/5/2017 4/1/2017 15 10 5/25/2017 10 5 6/10/2017 7 5 6/15/2017 HTML Editor 2. 3. 5.arrow_forwardWhy might a probabilistic estimate of a project’s completion time based solely on the variance of the critical path be misleading? Under what circumstances would it be acceptable?arrow_forward
- The following information has been computed from aproject:Expected total project time = T = 62 weeksProject variance (s2p ) = 81What is the probability that the project will be completed18 weeks before its expected completion date?arrow_forwardThe optimistic, most likely and pessimistic times for the tasks comprising a project are shown below. Use the data to compute the expected completion time and variance for each task. Task to tm tp A 5 10 19 B 2 16 19 C 7 10 14 D 6 22 29 E 20 26 29 Find the expected completion time and variance for each task and fill in the table below (enter your responses rounded to two decimal places). Task to tm tp te s2t A 5 10 19arrow_forwardWhen planning, who is responsible to breakdown and define the different levels of the project plan? Process Owner Project Manager Project Scheduler Project Estimatorarrow_forward
- The use of probability curves to describe a project estimate helps to deal with: Your answer: The impact of uncertainty on demand. The impact of uncertainty on estimating times. The impact of uncertainty on costs. The impact of uncertainty on satisfaction.arrow_forwardA project is scheduled to complete in six months duration. There are two activities in the project. The actual cost of Activity 1 is SAR 300,000 and that of Activity 2 is SAR 200,000. The planned value of these activities is SAR 280,000 and 150,000 respectively. On reviewing, the current project status is Activity 1 is 100% completed and Activity 2 is only 75% completed. (i) Perform the earned value calculations of the above project scenario and fill the given table. (ii) What do you infer about the project schedule and cost based on your calculations? Earned Value Planned Value Actual Cost Cost Variance Activity Scheduled Variance Cost performance Index Schedule performance Index Month 1arrow_forwardA project is scheduled to complete in six months duration. There are two activities in the project. The actual cost of Activity 1 is SAR 300,000 and that of Activity 2 is SAR 200,000. The planned value of these activities is SAR 280,000 and 150,000 respectively. On reviewing, the current project status is Activity 1 is 100% completed and Activity 2 is only 75% completed. (i) Perform the earned value calculations of the above project scenario and fill the given table. Activity Month 1 Earned Value Planned Value Actual Cost Cost Variance Scheduled Variance Cost performance Index Schedule performance Index (ii) What do you infer about the project schedule and cost based on your calculations?arrow_forward
- Consider the project described in the table below: Activity Duration A B C D E F G H 9 4 8 8 5 7 4 6 OEST-9 and LCT = 15 OEST=9 and LCT = 13 Immediate Predecessor What is the earliest start time (EST) and latest completion time (LCT) of activity B? OEST=9 and LCT = 20 OEST-9 and LCT-17 - A A A B B,C C,D E,F,Garrow_forwardWhy is it important to periodically re-evaluate and adjust software cost estimates during the life of a project?arrow_forwardHow is Project Planning, Scheduling, and Controlling is managed by the OM manager?arrow_forward
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