Practical Operations Management
2nd Edition
ISBN: 9781939297136
Author: Simpson
Publisher: HERCHER PUBLISHING,INCORPORATED
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Question
Chapter 7, Problem 12P
Summary Introduction
Interpretation: Impact on overall duration of the project, when a non critical path activity is crashed is to be determined.
Concept Introduction: Critical path is the arrangement of project activities which gives an estimate time duration under which project will be completed. The project activities may include float activities which can be delayed focusing on the shortest time duration.
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What is the critical path of a project best described as?
Given the project information in the following table, what is the probability of completing the National Holiday Toy project in 93 time units?
Three critical path activities from the same critical path are candidates for crashing on a CPM network.
What is the crash cost per unit time for activity A?
What is the crash cost per unit time for activity B?
Which activity should be crashed first to cut one day from the project's duration; how much is added to project cost?
Assuming no other paths become critical, which activity should be the next activity crashed to cut a second day from the project's duration; how much is added to project cost?
Assuming no other paths become critical, how much can this project be shortened at what total added cost?
Chapter 7 Solutions
Practical Operations Management
Ch. 7 - Prob. 1DQCh. 7 - Prob. 2DQCh. 7 - Prob. 3DQCh. 7 - Prob. 4DQCh. 7 - Prob. 5DQCh. 7 - Prob. 6DQCh. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4P
Ch. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 1.1QCh. 7 - Prob. 1.2QCh. 7 - Prob. 1.3QCh. 7 - Prob. 1.4QCh. 7 - Prob. 2.1QCh. 7 - Prob. 2.2QCh. 7 - Prob. 2.3Q
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- Generally, project life cycles have phases, which are sequential, and their ends are punctuated by either technical information transfer or technical component hand over. Project phases vary by project or industry, where in the project life cycle are the intensity level of resources and client interest at their highest. Why is the case?arrow_forwardGiven the following project: Activity Predecessor Normal Time (day) Normal Cost ($) Crash Time (day) Crash Cost ($) A - 4 800 2 1300 B - 10 1200 7 2400 C A 6 1100 4 1700 D A,B 7 1000 4 1600 E C 10 2000 8 3000 F C,D 5 900 - - (a) Draw the network and find the critical path duration of the project, total cost of project using normal times. (b) Calculate the maximum time reduction and crash cost-per-day (all activities may be partially crashed) for each activity. Then fill the table below. (Note: Activity “F” cannot be crashed) Activity Maximum Time Reduction (day) Cost to Crash per Period ($/day) A B C D E F (c) Find the optimal way of getting a 20-day delivery time. What is the project cost? (d) Find the optimal way of getting a 18-day delivery time. What is the project cost?arrow_forwardIf the pessimistic duration of an activity is 205, the most likely duration is 160 days and the optimistic duration is 115 days, what is the expected time of the activity for PERT/CPM analysis ? What is the variance for the activity time for PERT/CPM analysis ?arrow_forward
- Which project life cycle model (traditional, agile...) is more appropriate for the public and/or private sector?arrow_forwardStart date: April 8, 2022 Working days: Monday-Saturday Assume no holidays. What is the project completion time? Which is the critical path? When will the outreach program start?arrow_forwardWhat is the duration of the critical path? The following table is an activity list that includes the duration and predecessor for a series of project activities. What is the duration of the critical path? A) 11 B) 14 C) 9 D) 13arrow_forward
- .Find the project details in the below table, draw the network activity diagram and identify the critical path for the project. Activities Predecessors Time duration A - 3B A 5C A 4D B 6E B, C 7F D, E 4arrow_forwardGiven the project information in the following table, what is the probability of completing the national holiday toy project in 93 time units? show all workarrow_forwardHow is the variance of the total project computed inPERT?arrow_forward
- Assuming that the project is performed by an outside contractor, what is the role of the customer's employees in the planning stages of the project life cycle?arrow_forwardProject Management 4. Jamaica's Highway 2000 project: Using your knowledge of the project life cycle and information gathered from the examination of the project documents, describe the phrases of the project and the key activities/tasks associated with each phase of the project.arrow_forwardIntegrated Health was a large private, nonprofit health care system located in Tempe,Arizona. A year ago, the decision was made to implement a computerized medication administration record (MAR) at Integrated Health. During the first year, the MAR system would be implemented at Central Hospital of Tempe. After the “bugs” were worked out, the computerized MAR would be implemented system-wide. The MIS department at Central Hospital was designated as the initiator and direction setter for the project. Art Smith, the Chief Information Officer at Central Hospital assigned Kate Cohen, a programmer/analyst, as project leader. Kate had the responsibility for developing and implementing the MAR project at Central. Kate did the programming work for the MAR and assembled a team from Pharmacy Services, Nursing Services, and Internal Auditing. Members of the project team provided feedback on the software, made suggestions related to user training, and worked on an implementation schedule. Both team…arrow_forward
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