Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)

10th Edition

ISBN: 9780134181981

Author: Jay Heizer, Barry Render, Chuck Munson

Publisher: PEARSON

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Textbook Question

Chapter 3, Problem 21P

Rich Cole Control Devices, Inc., produces custombuilt relay devices for auto makers. The most recent project undertaken by Cole requires 14 different activities. Cole’s managers would like to determine the total project completion time (in days) and those activities that the along the critical path. The appropriate data are shown in the following table.

a) What is the probability of being done in 53 days?

b) What date results in a 99% probability of completion?

Chapter 3, Problem 21P, Rich Cole Control Devices, Inc., produces custombuilt relay devices for auto makers. The most recent

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Chapter 3, Problem 20P

Chapter 3, Problem 22P

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Rich Cole Control Devices, Inc., producescustom-built relay devices for auto makers. The most recentproject undertaken by Cole requires 14 different activities.Cole’s managers would like to determine the total projectcompletion time (in days) and those activities that lie alongthe critical path. The appropriate data are shown in the fol-lowing table.a) What is the probability of being done in 53 days?b) What date results in a 99% probability of completion?

In reference to the attached image and data below: What are the final recommendations? Step A we know: Critical Path = A, B, H, I, J; Project Time = 40 Weeks; Total Cost = 364,000 Step B we know: To crash the critical path I would crash A by 1 week, B by 2 week, H by 2 week and C by 3 week. This would not alter the critical path, only the time line. Steps C we know: Modeling uncertainty in activity times. In this case I would use the activity times and determine the Variances and the Standard Deviation. Using “best case” (x) and “worst case” (y) scenarios for activity times the formula’s would be (x-y)/6 and (x-y)^2/36.

Your company has just received an order from a good customer for a specially designed electric motor. The contract states that, starting on the 13th day from now, your firm will experience a penalty of $100 per day until the job is completed. Indirect project costs amount to $200 per day. The data on direct costs and activity precedence relationships are given in Table. Electric Motor Project Data Activity Normal Time(days) Normal Cost ($) Crash Time (days) Crash Cost ($) ImmediatePredecessor(s) A B C D E F G H 4 7 5 6 3 11 4 3 1000 1400 2000 1200 900 2500 800 300 3 4 4 5 2 6 3 1 1300 1200 2700 1400 1100 3750 1450 500 None None None A B C D,E F,G a. Draw the project network diagram.b. What completion date would you recommend?

Chapter 3 Solutions

Principles of Operations Management: Sustainability and Supply Chain Management (10th Edition)

Ch. 3 - Ethical Dilemma Two examples of massively...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 - Prob. 10DQ Ch. 3 - Define earliest start, earliest finish, latest...Ch. 3 - Students are sometimes confused by the concept of...Ch. 3 - Prob. 13DQ Ch. 3 - Prob. 14DQ 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 - What is the difference between the waterfall...Ch. 3 - The work breakdown structure (WBS) for building a...Ch. 3 - James Lawson has decided to run for a seat as...Ch. 3 - Prob. 3P Ch. 3 - Refer to the table in Problem 3.3. a) Draw the AON...Ch. 3 - Draw the activity-on-node (AON) project network...Ch. 3 - Given the activities whose sequence is described...Ch. 3 - Prob. 7P Ch. 3 - Roger Ginde is developing a program in supply...Ch. 3 - Prob. 9P Ch. 3 - The activities described by the following table...Ch. 3 - Prob. 11P Ch. 3 - The activities needed to build a prototype laser...Ch. 3 - Dave Fletcher (sec Problem 3.12) was able to...Ch. 3 - The Rover 6 is a new custom-designed sports car....Ch. 3 - Ross Hopkins, president of Hopkins Hospitality,...Ch. 3 - A renovation of the gift shop at Orlando Amway...Ch. 3 - Kelle Carpet and Trim installs carpet in...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 - Prob. 23P Ch. 3 - Prob. 28P Ch. 3 - Prob. 29P Ch. 3 - Prob. 30P Ch. 3 - Development of Version 2.0 of a particular...Ch. 3 - Prob. 32P Ch. 3 - Prob. 1CS Ch. 3 - Prob. 2CS Ch. 3 - Prob. 3CS Ch. 3 - Prob. 1.1VC Ch. 3 - Prob. 1.2VC Ch. 3 - Project Management at Arnold Palmer Hospital The...Ch. 3 - Prob. 1.4VC Ch. 3 - Managing Hard Rocks Rockfest At the Hard Rock...Ch. 3 - Managing Hard Rocks Rockfest At the Hard Rock...Ch. 3 - Managing Hard Rocks Rockfest At the Hard Rock...Ch. 3 - Managing Hard Rocks Rockfest At the Hard Rock...

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