Project planners have sought the judgment of various knowledgeable engineers, vendors andforemen and have developed the time estimates for the plant construction project as shown inthe table below.ActivityEstimatesPredecess Time(months)orDescription CodeAa9Design plantSelect SiteSelect Personnel118None16BA235CA145Select VendorDA349.Project siteManufacture generatorPrepare manualInstall generatorTrain operatorsLicenseE1220F1518288E,FD,G2485812JH,I514a. Construct the PERT network for the project.b. Find the critical path and its standard deviation.c. Determine the slack time of all activities of the project.

ES = maximum (EF of all immediate predecessor) EF = ES + duration Minimum project duration = largest…

Answered: Project planners sought judgment of…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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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 6 - E 5 BB 8 - F 6 BC 2 A G 9 C, ED 3 A H 7 D , F Dave's earilest start (ES) and earliest finish (EF) are: Activity ES EF A 0 6 B 0 ? C D E F G H
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
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 mistake
Coleman Rich Control Devices, Inc., produces custom-built relay devices for auto makers. The most recent project undertaken by Rich requires 14 different activities. Rich's managers would like to determine the total project completion time (in days) and those activities that lie along the critical path. The appropriate data are shown in the following table: Time (days) Immediate Time (days) Immediate Activity a m b Predecessor(s) Activity a m b Predecessor(s) A 4 7 8 — H 3 3 6 E, F B 1 2 3 — I 3 7 9 G, H C 7 7 7 A J 2 6 9 I D 6 9 13 A K 8 9…
Dave is the project manager for a construction project that is building agazebo. When the project first started, he met with the stakeholders to definethe scope. The sponsors mentioned that the gazebo is a really important partof their daughter’s wedding ceremony that was planned for 7 months fromthen. In fact, they said that if the gazebo couldn’t be completed in 7 months, itwouldn’t be worth it for them to even start the project. Dave wrote down the7-month deadline to put in his Project Scope Statement. In which section ofthe document did the deadline appear?”A. Project ConstraintsB. Project DeliverablesC. Project ObjectivesD. Project Assumptions Which of the following is a “hygiene factor” under Herzberg’s Motivation-Hygiene Theory?A. Recognition for excellent workB. Self-actualizationC. Clean clothingD. Good relations with coworkers and managers
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 ? ?
The table below contains data for the installation of new equipment in a manufacturing process for a steel corporation. Your company is responsible for the installation project. Indirect costs are $6,000 per week, and a penalty cost of $10,000 per week will be incurred by your company for every week the project is delayed beyond week 15. Activity Immediate Predecessor(s) Normal Time (weeks) Crash Time (weeks) Normal Cost ($) Crash Cost ($) A None 2 1 7,000 10,000 B None 2 2 3,000 3,000 C A 3 1 12,000 40,000 D B 3 2 12,000 28,000 E C 1 1 8,000 8,000 F D, E 5 3 5,000 15,000 G E 3 2 9,000 18,000 H F, G 8 6 14,000 32,000 Construct a network diagram for the project. What are the project completion time and the total cost under normal conditions? What is the shortest time duration for this project regardless of cost? What is the resulting total cost? What is the…
Farihah is a project manager for a systems development project involving a new database application for her organization’s human resources department. Despite Farihah’s best efforts at estimating the time requirements for the project, the team has missed the deadline for completing the Analysis Phase and producing the System Proposal. Farihah had estimated during her 6-week Planning Phase that Analysis would require 2 months, but the team finished the System Proposal 2 weeks behind their planned target date. Based on her discussions with the team members, Farihah believes that the system is more complex than she originally thought. Should Farihah adjust her timeline, or can she try to make up for the lost two weeks? Farihah needs your advice.
We are the project manager for an IT project in our company. We identified the following top-level project tasks and estimated durations to standup a small test lab for the project: Identify test lab building/space requirements and possible locations(8days) Select best location for lab (1day) Once the best location is selected, immediately start the next two tasks: Prepare lab space with power and cabling (3days) Identify/procure required specialized test lab hardware/software(5) Once the lab space is prepared, install/check out available infrastructure hardware/software(1day). Once the specialized software/hardware is received and the infrastructure hardware/software is installed/checked out, install/checkout specialized software/hardware (2days) Once all tasks are completed, conduct the final inspection (1 day). Let's create a PERT/CPM chart for this project and identify the overall project duration and critical path.
An IT project manager of ABC Company has developed an activity list for the purpose oftracking employees’ daily activities on the project. The project’s schedule is considered to be ofhigh risk due to the possibility of sabotage by some of the employees. In addition, the IT projectmanager has gathered time information for each activity, as shown in the table below. Considerthe following project’s tasks and their identified best, likely, and worst case estimates of taskduration. Assume the organization computes PERT weight average based on the standardformula.Activity Optimistic MostlikelyPessimisticA 5 5 25B 3 5 8C 7 5 8D 4 4 5E 10 19 34F 3 14 18G 6 16 20H 32 44 65I 12 17 25J 2 8 18The dependencies between the 10 activities listed in the table above are as follows: The project starts with two activities—A, and B—which can be done concurrently. When activity A is finished, activity C can start When activity B is finished, activities D and E can start When both activities C and D are…
Management Firm is a consulting company that specializes in the development of decision support systems. Time (Weeks) Activity Description ImmediatePredecessor Optimistic Most Probable Pessimistic A Report generation 2 8 12 B Web scraping 4 9 11 C Testing A, B 1 1 1 (A) Based solely on the critical path, estimate the probability that the project will be complete within 11 weeks. (Round your answer to four decimal places.) (b) Using all paths through the project network, estimate the probability that the project will be complete within 11 weeks. (Round your answer to four decimal places.)
Using your results from Problem 6,(a) Calculate the probability that the project will be completedin 38 weeks.(b) Calculate the probability that the project will be completedin 42 weeks

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