Pearson Etext For Principles Of Operations Management: Sustainability And Supply Chain Management -- Access Card (11th Edition)
Pearson Etext For Principles Of Operations Management: Sustainability And Supply Chain Management -- Access Card (11th Edition)
11th Edition
ISBN: 9780135639122
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Chapter 3, Problem 21P

a)

Summary Introduction

To calculate: The probability of completing the work in 53 days.

b)

Summary Introduction

To calculate: The date that results in a 99% probability of completion.

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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.
Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine​ ES, EF,​ LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity​ times: Activity    Time (weeks)    Immediate Predecessor(s)    Activity    Time (weeks)  Immediate Predecessor(s)A    7    -    E    4    BB    8    -    F    7    BC    4    A    G    11    C, ED    1    A    H    6    D , F ​Dave's earliest start​ (ES) and earliest finish​ (EF) are:   Activity ES EF A 0 7   B 0 8   C 7 11   D 7 88   E 8 12 Part 7 F ? ? G    ?    ? H    ?    ?
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

Pearson Etext For Principles Of Operations Management: Sustainability And Supply Chain Management -- Access Card (11th Edition)

Ch. 3 - Prob. 10DQCh. 3 - Define earliest start, earliest finish, latest...Ch. 3 - Students are sometimes confused by the concept of...Ch. 3 - Prob. 13DQCh. 3 - Prob. 14DQCh. 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. 3PCh. 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. 7PCh. 3 - Roger Ginde is developing a program in supply...Ch. 3 - Prob. 9PCh. 3 - The activities described by the following table...Ch. 3 - Prob. 11PCh. 3 - The activities needed to build a prototype laser...Ch. 3 - Prob. 13PCh. 3 - Dave Fletcher (sec Problem 3.12) was able to...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 - Prob. 21PCh. 3 - Four Squares Productions, a firm hired to...Ch. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Development of Version 2.0 of a particular...Ch. 3 - Prob. 32PCh. 3 - Prob. 33PCh. 3 - Prob. 1.1VCCh. 3 - Prob. 1.2VCCh. 3 - Project Management at Arnold Palmer Hospital The...Ch. 3 - Prob. 1.4VCCh. 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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