Operations Management
11th Edition
ISBN: 9780132921145
Author: Jay Heizer
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 24P
Using PERT, Adam Munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4.
- a. What is the probability that the project will be completed in 17 months?
- b. What is the probability that the project will be completed in 20 months?
- c. What is the probability that the project will be completed in 23 months?
- d. What is the probability that the project will be completed in 25 months?
- e. What is the due date that yields a 95% chance of completion?
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Using PERT, Adam Munson was able to determinethat the expected project completion time for the construction ofa pleasure yacht is 21 months, and the project variance is 4.a) What is the probability that the project will be completed in17 months?b) What is the probability that the project will be completed in20 months?c) What is the probability that the project will be completed in23 months?d) What is the probability that the project will be completed in25 months?e) What is the due date that yields a 95% chance of completion?
Using PERT, Adam Munson was a ble to determinethat the expected project completion time for the construction ofa pleasure yacht is 21 months, and the project va riance is 4.a) What is the probability that the project will be completed in17 months?b) What is the probability that the project will be completed in20 months?c) What is the probability that the project will be completed in23 months?d) What is the probability that the project will be completed in25 months?e) What is the due date that yields a 95% chance of completion?
The following precedence diagram reflects three time estimates for each activity. Determine:
Use Table B1 and Table B2.
9-10-12
3
8
5-7-10
8-10-14
11-12-13
6
11
14-18-26
10.5-13-15.5
10
8-8-8
1
5-6-7
2
4
13-13-13
7
7-10-12
a. The expected completion time for each path and its variance. (Round intermediate calculations to 4 decimal places and final
answers to 2 decimal places.)
Path
Mean
Var.
Std. Dev.
1-2-3-8-11
37.33
1-2-4-6-11
43.00
5.11
1-2-4-7-11
0.81
1-2-5-9-10-11
46.83
1.25
9-9-9
10-11-12
10-12-14
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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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
- A company is willing to develop their rocket before the end of current financial year which is now 28 weeks away. The chief engineer of the company has decided to use PERT technique in order to plan, schedule and control program of development for the data given in table below. What is the probability that the program will be completed by the end of the current financial year? (all durations are in weeks). (i) G) Optimum Duration Most likely duration Pesimistic duration 1 2 3 8 13 3 2 8 4 3 8 10 4 7 10 3 6. 3 8 4 9 10 4 8. 4 9. 5 7 9. 12 6. 5 11 7 9. 14 8 4. 00 2.arrow_forwardKimpel Products makes pizza ovens for com-mercial use. James Kimpel, CEO, is contemplating produc-ing smaller ovens for use in high school and college kitchens.The activities necessary to build an experimental model andrelated data are given in the following table: a) What is the project completion date?b) Crash this project to 10 weeks at the least cost.c) Crash this project to 7 weeks (which is the maximum it canbe crashed) at the least cost.arrow_forward1.) You have determined the following for a given project: Expected completion time of the project = 40 weeks Standard deviation of project completion time = 8 What is the probability of completing the project in more than 44 weeks? answer as a decimal and take it to four places.arrow_forward
- 11. Using PERT, Adam Munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 24 months, and the project variance is 4. Part 2 a) The probability that the project will be completed in 20 months = ______ (round your response to four decimal places)arrow_forwardNeed help solving C and D. D) Freeze Inc.’s CEO established as a goal for top management to complete the project on or before 22 weeks. What is the probability that this project will be completed on or before 22 weeks?arrow_forwardA project has the following tasks and duration estimates given. These three tasks are done in succession on a project. Task Optimistic Estimate Most Likely Estimate Pessimistic Estimate Alpha 30 days 40 days 50 days Beta 20 days 25 days 28 days Charlie 4 days 10 days 12 days Delta 25 days 30 days 50 days What is the expected duration for the project? (3 points) What is the variance for the project? (3 points) What is the standard deviation of the project? (3 points) What is the range of the duration of the project given 3 sigma? (3 points)arrow_forward
- Answer following 4 questions 1: The probability that the project would be completed within 40 days: Group of answer choices 0.0228 0.0456 0.4772 0.9772 None of the above 2: The probability that the project would take longer than 40 days is: Group of answer choices 0.0228 0.0456 0.4772 0.9772 None of the above 3: The probability that the project would be completed within 20 days: Group of answer choices 0.0228 0.0456 0.4772 0.9772 None of the above 4: The probability that the project would take longer than 20 days to finish: Group of answer choices 0.0228 0.0456 0.4772 0.9772 None of the abovearrow_forward34arrow_forwardSuppose the due date of the project is 18 months and the probability of completing it is 75%, while the deviation from the mean is 1.8 months. What will be the expected time of completion?arrow_forward
- The following information relates to a project (task times are in weeks). Use the information to solve for the critical path and then to determine the probability that the project could be completed within 36 weeks. Task A B C D E F Preceding Tasks to 4 4 2 None A B D, E tm 6 7 7 8 13 9 8 0 W CON 6 tp 8 10 12 18 15 10 Click the icon to view the table of standard normal probabilities. The probability that the project is completed within 36 weeks is. (Enter your response rounded to four decimal places.)arrow_forwardAnalyse the sensitivity analysis and summarise the implications of the analysis for the project, Property acquisition 50%, financing 70% and construction 50%.arrow_forwardc. What is the expected project completion time? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Project completion time d. What is the probability of completing this project within 16 days? (Use Excel's NORMSDIST() function to find the correct probability for your computed Z-value. Do not round intermediate calculations. Round "2" value to 2 decimal places and final answer to 4 decimal places.) Probability 10 00 days 09994arrow_forward
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