OPERATIONS MANAGEMENT LOOSELEAF W/ CONN
14th Edition
ISBN: 9781264343898
Author: Stevenson
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 17, Problem 9P
(a)
Summary Introduction
To determine: The probability of the project will take more than 10 weeks to complete where time is given in weeks and the construction of a network diagram for the information given with mean and standard deviation.
Introduction: The time required to complete any activity is estimated with optimistic (optimum time), pessimistic (time required in worst condition), and most likely time (probable time).
(b)
Summary Introduction
To determine: The probability if the project will take 16.5 or more weeks to complete with the given information of mean and standard deviation.
Introduction: The time required to complete any activity is estimated with optimistic (optimum time), pessimistic (time required in worst condition), and most likely time (probable time).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You may need to use the appropriate technology to answer this question.
Mueller & Associates is a urban planning firm that is designing a new public park in an Omaha suburb. Coordination of the architect and subcontractors will require a major effort to meet the 42-
week completion date requested by the owner. The Mueller project manager prepared the following project network.
Start
Activity
A
B
с
D
E
Estimates of the optimistic, most probable, and pessimistic times (in weeks) for the activities are as follows.
TI
G
H
Optimistic Most Probable
4
6
6
weeks
3
6
5
10
A
5
8
7
12
5
9
8
B
15
6
Pessimistic
12
8
18
7
18
17
20
(b) What is the expected project completion time (in weeks)?
52
13
F
E
(a) Find the critical path. (Enter your answers as a comma-separated list.)
A,C,E,G,H
G
H
Finish
(c) Based only on the critical path, what is the estimated probability the project can be completed in 42 weeks as requested by the owner? (Round your answer to four decimal places.)
X
(d) Based only on the…
A solved PERT problem is detailed in the table below. The expected time and variance values and the critical activities are given in the table below. Answer the following questions by filling the blanks (WRITE YOUR ANSWERS TO 2 DECIMAL PLACES. DO NOT ROUND UP OR DOWN):
a. The expected project completion time for this problem is and the standard deviation is .
b. There is a 0.95 probability that the project will be completed by weeks.
Activity
Expected time
Variance
Critical?
A
10
0.36
Yes
B
7
0.11
No
C
7
0.25
No
D
3
0.48
Yes
E
5
1.60
Yes
F
7
0.69
No
G
2
3.69
Yes
By using Bar chart planning method, find the following:
- Total duration for the project activities shown below
- The project completion date (assume the start date is
1/3/2012
Activity
A
CDEFGHI
J
Duration
85 2846 7 45 6
(days)
Following
Activity
C,D EFGHIJJ
* If the project shown above had a delay of (4 days after
(13working days), what would its new delivery date be?
B
B
Chapter 17 Solutions
OPERATIONS MANAGEMENT LOOSELEAF W/ CONN
Ch. 17.3 - Will the AI technology render project managers...Ch. 17.3 - Prob. 1.2RQCh. 17 - A project manager may need two skill setsthose of...Ch. 17 - Explain the term project champion and list some...Ch. 17 - List the steps in risk management.Ch. 17 - Give some examples of ethical issues that may...Ch. 17 - What are the key advantages of using project...Ch. 17 - What is a work breakdown structure, and how is it...Ch. 17 - Identify the term being described for each of the...Ch. 17 - List the main advantages of PERT. List the main...
Ch. 17 - Why might a probabilistic estimate of a projects...Ch. 17 - Define each of these terms, and indicate how each...Ch. 17 - Why might a person wish to be involved with a...Ch. 17 - Prob. 12DRQCh. 17 - What are some aspects of the project managers job...Ch. 17 - What is the main benefit of a project organization...Ch. 17 - What trade-offs are associated with time and cost...Ch. 17 - Who needs to be involved in assessing the cost of...Ch. 17 - Prob. 3TSCh. 17 - Project management techniques have been used...Ch. 17 - Give three examples of unethical conduct involving...Ch. 17 - For each of the following network diagrams,...Ch. 17 - Chris received new word processing software for...Ch. 17 - Prepare a Gantt chart for each of the following in...Ch. 17 - a. Develop a list of activities and their...Ch. 17 - For each of the problems listed, determine the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Three recent college graduates have formed a...Ch. 17 - The new director of special events at a large...Ch. 17 - Prob. 9PCh. 17 - The project described in the following table is...Ch. 17 - The following precedence diagram reflects three...Ch. 17 - A project manager has compiled a list of major...Ch. 17 - Here is a list of activity times for a project as...Ch. 17 - The project manager of a task force planning the...Ch. 17 - PRINTED BY: 92248ddb24ccbc6@placeholder.10274.edu....Ch. 17 - Chucks Custom Boats (CCB) builds luxury yachts to...Ch. 17 - Prob. 17PCh. 17 - Create a risk matrix in the style of Figure 17.13...Ch. 17 - Create a risk matrix for this project: Explain...Ch. 17 - B. Smitty Smith is a project manager for a large...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- The table below contains information about an environmental clean-up project in the township of Hiles. Shorten the project threethree weeks by finding the minimum-cost schedule. Assume that project indirect costs and penalty costs are negligible. Identify activities to crash while minimizing the additional crash costs. Activity Normal Time (weekweeks) Crash Time (weekweeks) Cost to Crash ($ per weekweek) Immediate Predecessor(s) A 55 44 300300 None B 77 44 5050 None C 77 66 300300 A D 77 66 250250 A E 11 11 long dash— B F 33 33 long dash— C, D G 55 44 200200 D, E H 44 22 200200 F I 22 22 long dash— G Part 2 Fill in the table below with the activity times after crashing to show the resulting schedule. (Enter your responses as…arrow_forwardCrashed Completion time (week) Crashed Cost per Preceding Activity Normal Completion Time (week) Activity week A 7 5 $600 $700 $400 $800 12 10 A 8 2 D 9 7 E C, D 5 4 $300 F E 9 8 $500 G D, F 10 10 Find the minimum possible completion time of the project by considering the crashed completion times and the minimal total cost of that crashing the project. Highlight the critical and non-critical activities of the finally completed project by taking into account the crashed times of activities.arrow_forwardGiven the following AON network and activity time estimates, determine the expected project completion time and variance, as well as the probability that the project will be completed in 28 days or less: Start Finish Time Estimates (weeks) Activity m 5 17 2 7 10 13 3 7 4 3 5 5 4 6 6. 3 3 3 4arrow_forward
- The Farmer's American Bank of Leesburg is planning to install a new computerized accounts system. Bank management has determined the activities required to complete the project, the precedence relationships of the activities, and activity time estimates, as shown in the following table. Use POM- QM to analyze this project. According to the result of POM-QM, the expected project completion time is (type number only, no text) Activity a b C d C f 8 k Activity Description Position recruiting System development System training Equipment training Manual system test Preliminary system changeover Computer-personnel interface Equipment modification Equipment testing System debugging and installation Equipment changeover Activity Predecessor a a b, c b, c d, e d, e h f.g a 5 3 4 5 I 1 3 Time Estimates (weeks) 1 1 2 5 m 8 12 7 8 I 4 6 2.5 1. 2 8 b 17 15 10 23 1 13 9 7 1 2 11arrow_forwardConstruct the project network for this project and determine the following: d) Expected project duration and variance e) The probability that the mill will be fined $300,000arrow_forwardActivities, preceding activities, normal and crashed completion times of each of the activities and crashed costs of activities per week of a project are given in the following table. Activity Preceding Activity Normal Crashed Completion time (week) Crashed Cost Completion Time (week) 7 per week A 7 B $500 C 4 3 $700 $600 A A, C В, D D, E D 7 E F 10 9. $800 9 8 $400 i. Draw the network diagram linking all the activities in a way that it shows if there exist any preceding activity/activities before starting each of the mentioned activities in the above table. ii. Find the earliest start time, the earliest finish time, the latest start time and the latest finish time of each of the activities in the drawn diagram of the project and hence the completion time of the project and the critical path.arrow_forward
- QUESTION 7 The Stone River Textile Mill was inspected by OSHA and found to be in violation of a number of safety regulations. The OSHA inspectors ordered the mill to alter some existing machinery to make it safer (add safety guards, etc.); purchase some new machinery to replace older, dangerous machinery; and relocate some machinery to make safer passages and unobstructed entrances and exits. OSHA gave the mill only 35 weeks to make the changes; if the changes were not made by then, the mill would be fined $300,000. The mill determined the activities in a CPM/PERT network that would have to be completed and then estimated the indicated activity times, as shown in the following Table 6: Table 6 Activity Description A B с D E F G H I J K Activity Description Order new machinery Plan new physical layout Determine safety changes in existing machinery Receive equipment Hire new employees Make plant alterations Make changes in existing machinery Train new employees Install new machinery…arrow_forwardActivity E has an optimistic time of 9 days, a most likely time of 12 days, and a pessimistic time of 15 days. Estimate its expected time and standard deviation.arrow_forwardCharlie is planning to open a Chinese food restaurant “Dragon Express” in Montana. The following table lists all of the activities involved in the opening of the restaurant. Charlie is able to provide his three best estimates for each activity and he wants to know when his restaurant can be open. Use POM-QM to analyze the project and answer the following questions. Activity # Activity name Predecessors Time estimates in weeks (a,m,b) 1 Select location and obtain financing - 2,4,8 2 Rent negotiation and sign paper work 1 1,2,2 3 Cleaning and renovation of the resturant 2 4,6,8 4 Design resutrant menu - 1,1,1 5 Order and recieve equipment and other necessities 2,4 4,8,12 6 Install equipment 3,5 1,1,1 7 Hire employees 6 1,2,2 8 Final examination 7 1,2,3 Based on the result of POM-QM, the expected completion time of the project is (type number only, no text, no decimals) Based on the result of POM-QM, the standard deviation of the project completion time is…arrow_forward
- Davison Construction Company is building a luxury lakefront home in the Finger Lakes region of New York. Coordination of the architect and subcontractors will require a major effort to meet the 42-week completion date requested by the owner. The Davison project manager prepared the following project network. H Start A Finish E Estimates of the optimistic, most probable, and pessimistic times (in weeks) for the activities are as follows. Activity Optimistic Most Probable Pessimistic A 4. 8 12 В 6. 8 12 18 D 3 5 7 18 8 17 G 10 15 20 H 5 13 (a) Find the critical path. (Enter your answers as a comma-separated list.) (b) What is the expected project completion time (in weeks)? weeks (c) Based only on the critical path, what is the estimated probability the project can be completed in 42 weeks as requested by the owner? (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.) (d) Based only on the critical path, what is the estimated…arrow_forwardRoger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table: Activity Immediate Predecessor(s) A (BCDEFG This exercise contains only parts b, c, and d. b) The critical activities for the leadership training program development project are c) The project length for the leadership training program development project = d) Slack time for each of the activities is: days. B A, D с E, F Activity A B CDEFG Slack Time Time (days) 3 GANGG 5 2 10 4 8arrow_forwardDavison Construction Company is building a luxury lakefront home in the Finger Lakes region of New York. Coordination of the architect and subcontractors will require a major effort to meet the 46-week completion date requested by the owner. The Davison project manager prepared the following project network. B F H Start A G Finish D E Estimates of the optimistic, most probable, and pessimistic times (in weeks) for the activities are as follows. Activity Optimistic Most Probable Pessimistic A 4 8 12 B 6 6 12 18 D 7 E 6 18 F 5 17 G 10 15 20 H 5 6 13 (a) Find the critical path. (Enter your answers as a comma-separated list.) (b) What is the expected project completion time (in weeks)? weeks (c) Based only on the critical path, what is the estimated probability the project can be completed in 46 weeks as requested by the owner? (You may need to use the appropriate technology to answer this question. Round your answer to four decimal places.) (d) Based only on the critical path, what is the…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY