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 todetermine 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:ActivityABсDEFGa) The expected completion time of the project =a4165121Time (days)m6268937b736111868ImmediatePredecessor(s)AAB, CDDActivity aH4I1J2K8216MNdays (round your response to two decimal places).Time (days)=m4659428b687116310ImmediatePredecessor(s)E, FG, HKL, MThe activities that represent the project's critical path areb) If the time to complete the activities on the critical path is normally distributed, then the probability that the critical path will be finished in 53 days or less =decimal places).c) Using the standard normal table, the number of days that would result in 99% probability of completion(round your response to twodays (round your response to two decimal places).

For each activity, I will determine the expected activity time, I am also given the immediate…

Answered: a) The expected completion time of the…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

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

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Consider a project that has been modeled as in the table below. Part a) Draw the PERT/CPM network for this project and determine the project’s expected completion time μP and its critical path. Part b) Suppose the standard deviations of the activity durations are σA = 2, σB = 1, σC = 0, σD = 2, σE = 3, and σF = 0. Then please estimate the standard deviation of the overall project’s standard deviation σP . Part c) Suppose for the standard Normal random variable Z, we know P[−1 ≤ Z ≤ +1] ' 68%, P[−2 ≤ Z ≤ +2] ' 95%, and P[−3 ≤ Z ≤ +3] ' 99.7%. Then, approximately what time T is one for which there is only a less than 2.5% chance for the completion time to beat (be shorter than)? *Please answer a-c and type your work and answers or write them neatly please* Thank you
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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.)
Suppose that a task in a project has the following time estimates: to=optimistic completion time=9 weeks tm=most likely completion time=17 weeks tp=pessimistic completion time=21 weeks Compute the expected task completion time. The expected task completion time is _________ weeks. (Enter your response rounded to one decimal place.)
William, a project manager, has a workload of 25,000 hours that needs to be completed in 30 weeks. He has a team of 20 people who work five 8-hour days per week. He notices that in the 30-week period, there are three holidays and 6 members have each requested 8 days off. Given this information, William is _____ short of completing his workload. Question options: 23,136 hours 1,864 hours 480 hours 1,480 hours 384 hours
B and C are incorrect.
The expected number of days to completion for a different project is E(x) = 3.32 The variance of days to completion is var(x) = 1.22 The project cost involves A fixed cost (in thousands of dollars) of FC = $83.783 A variable cost for each day taken to complete the project ($000) VC = $9.774 14 The expected value of the project cost is $_______ thousand. a 109.364 b 112.746 c 116.233 d 119.828
Answer all. What are the critical activities? What is the expected project duration? calculate the variance of the project What is the standard deviation (te) for the project? Suppose that management allotted 13-unit time for the project. What is the probability that we will meet the 13-unit time deadline? If management wants to have a 0.99 probability of meeting the time, what should be the scheduled project duration?
A project has a critical path with an expected duration of 22 and variance of 14. What is the probability it will be completed within 20-25 weeks (inclusive)? (the range of the answers account for rounding errors) Group of answer choices Between 55% and 58% Between 17% and 20% Between 47% and 52% Between 64% and 67% Between 60% and 63%
A 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)
1. A project was planned using PERT with three-time estimates. The expected completion time of the project was determined to be 40 weeks. The variance of the critical path is 9. (e) The project manager wishes to set the due date for the completion of the project so that there is a 90% chance of finishing on schedule. Thus, there would only be a 10% chance the project would take longer than this due date. What should this due date be?
In the space provided below create the network diagram that shows the relationship (logic) of project activities shown below and then number each event. 1. In a given project activities "A, B and C are initial activities that may begin at the same time 2. -----"D" cannot begin until "A" is complete. 3. ----- "B" must be complete before E can begin. 4. ----- "F" cannot start until "C" is finished. 5. ----- "G" cannot begin until "B" is finished. 6. ----- "G" and "D" must be done before "H" can begin. 7. ----- "I" cannot begin until "B" is finished. 8. ----- "J" can begin only after "F" and "I" are complete. 9. ----- Once "E" is complete, "K" can begin. 10. ---- The project will be finished when "H" "J" and "K" are complete.

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