OPERATIONS MANAGEMENT CUSTOM ACCESS
11th Edition
ISBN: 9780135622438
Author: KRAJEWSKI
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 7, Problem 20P
Jordanne King, the project manager for Webjets International, Inc., compiled a table showing time estimates for each of the activities of a project to upgrade the company’s Web page, including optimistic, most likely, and pessimistic.
- Calculate the expected time,
- Calculate the variance,
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Jordanne King, the project manager for Webjets International, Inc., compiled a table showing time estimates for each of the activities of a project to upgrade the company’s Web page, including optimistic, most likely, and pessimistic.a. Calculate the expected time, te, for each activity.b. Calculate the variance, s2, for each activity.Activity Optimistic (days) Most Likely (days) Pessimistic (days)A 3 8 19B 12 15 18C 2 6 16D 4 9 20E 1 4 7
scenarios of a project activities (tables given below) and their required times to be completed in
addition to their predecessors for developing a Website' :
Activity
Description
Duration (days)
Preceding Activities
A
Determine user needs
8
Review s/w and languages
Purchase software
10
Design format and style
10
E
Write programs
A
F
Review outcome product with user
12
G
Make revisions
4
C
H
Select server site
E
I
Install on server
14
D, F
Test
G, H, I
5. Calculate the slack time of the non-critical path activities
6. Identify the critical path (highlight critical path activities)
7. what would happen if activity D revised to take 14 instead of 10 days?
a) Construct a Gantt chart using MS Project 2016b) Assuming the default 5-day workweek, calculate the critical path of the project.c) Calculate the project duration.
Chapter 7 Solutions
OPERATIONS MANAGEMENT CUSTOM ACCESS
Ch. 7 - One of your colleagues comments that software is...Ch. 7 - Explain how to determine the slack for each...Ch. 7 - Define risk as it applies to projects. What are...Ch. 7 - Consider the following data for a project to...Ch. 7 - The following information is known about a project...Ch. 7 - A project for improving a billing process has the...Ch. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Consider the following information for a project...Ch. 7 - Consider the following data for a project to...
Ch. 7 - Paul Silver, owner of Sculptures International,...Ch. 7 - Prob. 9PCh. 7 - The following information concerns a project to...Ch. 7 - Consider a project to produce custom door moldings...Ch. 7 - Table 7.5 contains information about au...Ch. 7 - The Advanced Tech Company has a project to design...Ch. 7 - Prob. 14PCh. 7 - Table 7.8 contains data for the installation of...Ch. 7 - The diagram in Figure 7.12 was developed for the...Ch. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - You are the project manager of the software...Ch. 7 - Jordanne King, the project manager for Webjets...Ch. 7 - Recently, you were assigned to manage a project to...Ch. 7 - In Solved Problem 2, estimate the probability that...Ch. 7 - The director of continuing education at Bluebird...Ch. 7 - Gabrielle Kramer, owner of Pet Paradise, is...Ch. 7 - The project manager of Good Public Relations...Ch. 7 - Consider the office renovation project data in...Ch. 7 - Activity B and activity K are critical activities....Ch. 7 - Prob. 2AMECh. 7 - Prob. 3AMECh. 7 - Prob. 4AMECh. 7 - Prob. 5AMECh. 7 - Assess the four categories of a risk-management...Ch. 7 - Prob. 2VCCh. 7 - Assume you are Denise Tower and have...Ch. 7 - Prob. 1CCh. 7 - Prob. 2CCh. 7 - Prob. 3CCh. 7 - Prob. 4C
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- scenarios of a project activities (tables given below) and their required times to be completed in addition to their predecessors for developing a Website' : Activity Description Duration (days) Preceding Activities A Determine user needs 8 Review s/w and languages Purchase software 10 Design format and style 10 E Write programs A F Review outcome product with user 12 G Make revisions 4 C H Select server site E I Install on server 14 D, F Test G, H, I 3. Highlight the total time to complete the project (days) 4. Calculate the late finishing time (backwards calculations)arrow_forwardFind the activity duration (t), latest start (LS) and latest finish (LF) times for activity A. t=? 5 LS=? A 2 16 LF=? O t=11 weeks, LS-5 weeks, LF-16 weeks O t=21 weeks, LS-7 weeks, LF-18 weeks O t=11 weeks, LS=7 weeks, LF=18 weeks O t=11 weeks, LS=18 weeks, LF=7 weeks O t=11 weeks, LS-3 weeks, LF-14 weeksarrow_forward11-23 Tom Schriber, the director of personnel of Manage-ment Resources, Inc., is in the process of designing a program that its customers can use in the job-findingprocess. Some of the activities include preparingresumés, writing letters, making appointments to seeprospective employers, and researching companiesand industries. The information on these activities isshown in the following table: (d) Determine the critical path(s) and project com-pletion time. (e) Determine the probability that the project willbe finished in 70 days or less.(f) Determine the probability that the project willbe finished in 80 days or less.arrow_forward
- The project described in the following table has just begun. It is scheduled to be completed in 11 weeks.Use Table B1 and Table B2. Activity Estimated Time(weeks) Standard Deviation(wks.) 1-2 4 0.70 2-4 6 0.90 1-3 3 0.62 3-4 9 1.90 a. If you were the manager of this project, would you be concerned? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.) because the probability of finishing on schedule is only about . b. If there is a penalty of $5,000 a week for each week the project is late, what is the probability of incurring a penalty of at least $5,000? (Round your intermediate calculations to 2 decimal places and "Probability" values to 4 decimal places.) Probability Have worked this with various formulas and all come back wrong. Where am I making a mistakearrow_forwardI want answer with explanation... I'll upvote you... Only typed answer I want... The following table of probabilistic time estimates (in weeks) and activity predecessors are provided for a project. Activity optimistic time most likely time pessimistic time Activity Predecessor A 1 4 7 -- B 2 6 7 -- C 3 3 6 B D 6 13 14 A E 3 6 12 A, C F 6 8 16 B G 1 5 6 E, F Table 1 Reference: Ref 1 Using Table 1, the probability that the project could be completed in 23 weeks or less is approximately A. 0.94 B. 0.87 C. 0.91 D. 0.89arrow_forward. Assume that a project has an expected total duration of 25 days, but several optimistic employees feel that it can be completed in as little as 18 days, while others expect it to take nearly 40 days. Using program evaluation and review technique calculations, what is the project duration to be used in project Gantt charts and other tracking tools?2. If a critical path method calculation of project duration was 25 days, how does the program evaluation and review technique calculation in Question 1 compare?arrow_forward
- Activity A B CDEFG 3. You have been appointed as the project leader of a project to be undertaken by your company. You have identified the following tasks and made the time estimates for each task as listed in the table below: с Preceding "from" activity A A A B,C C,D,E F Succeeding "to" activity B,C,D E E F F G Estimated duration work days) 3 5 3 10 8 14 7 a) Use the above table to construct a project network diagram. b) Determine the critical path for the project and its duration.arrow_forwardA project consists of five activities as shown in the following table. Activity Floor sanding Floor buffing Paint mixing Wall painting Ceiling painting Optimistic Time (hr) Most Probable Time (hr) 4 4 0.5 2 3 5 5 Сл 1 3 7.5 Pessimistic Time (hr) 6 6 1.5 10 9 Naturally, the paint mixing precedes the painting activities. Also, both ceiling painting and floor sanding must be done prior to floor buffing. (a) Construct the PERT/CPM network for this problem.arrow_forwardGeneral Foundry’s project crashing data are shown below. Crash this project to 13 weeks using CPM. What is the final time for each activity after crashing? What is the crash cost per week per activity and the total cost of crashing? TIME (WEEKS) COST ($) ACTIVITY IMMEDIATE PREDECESSORS NORMAL CRASH NORMAL CRASH A — 2 1 22,000 23,000 B — 3 1 30,000 34,000 C A 2 1 26,000 27,000 D B 3 2 48,000 49,000 E C 4 2 56,000 58,000 F C 3 2 30,000 30,500 G D, E 5 2 80,000 83,000 H F, G 2 1 16,000 19,000arrow_forward
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