Consider the project with the following estimates for activity times and precedence relationships:OptimisticTimePessimisticTime355921028173779210ActivityABсDEFGHMostLikely Time47357586ImmediatePredecessor(s)--ABBC, DD, EF(a) What is the expected duration of the project?(b) What is the project variance?(c) If the deadline of the project is 25 days, what is the probability of finishing the project on time?

A project has 8 activities with 3 time estimates in days:ActivityOptimistic Most Likely Pessimistic…

Answered: Consider the project with the following…

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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7. Contract requirements state that a project must be completed within 180 working days, or it will incur penalties for late completion. Analysis of the activity network reveals an expected project completion time of 145 working days with a project variance of 400. What is the probability that the project will be completed before the late-payment deadline? (select the closest answer) Select one: a. about 4% b. over 99% c. about 80% d. about 46% e. about 96%
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
Kimpel 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.
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
The following information has been computed from aproject:Expected total project time = T = 62 weeksProject variance (s2p ) = 81What is the probability that the project will be completed18 weeks before its expected completion date?
Suppose the due date of the project is 24 months and expected time of completion is 28 months, while the probability of completing it is 90%. What will be the standard deviation?
you decide to estimate duration and standard deviation of a project using PERT method. the project has 3 steps the following are the optimistic, most likely and pessimistic durations in weeks:step 1: 2,5,10Step 2: 1,3,13Step3: 7,8,11,what is the estimated duration and standard deviation of the project duration?Estimated Duration =16 standard Deviation =4.9Estimated Duration =18 standard Deviation =4.9Estimated Duration =18 standard Deviation =2.49Estimated Duration =16 standard Deviation =24
c. 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 09994
Recently, you were assigned to manage a project for your company. You have constructed a network diagram depicting the various activities in the project (shown below to the right). In addition, you have asked your team to estimate the amount of time that they would expect each of the activities to take. Their responses are shown in the following table: example Activity A B C D Get more help. E Time Estimates (days) Most Likely Optimistic 4 5 4 1 3 8 8 5 4 8 Pessimistic 12 12 7 5 a. What is the expected completion time of the project? The expected completion time is 19 days. (Enter your response as an integer.) b. What is the probability of completing the project in 21 days? Refer to the standard normal table. The probability of completing the project in 21 days is 9 MacBook Pro Start (Enter your response rounded to four decimal places.) 0 Finish Q Q Clear all Check answer
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
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?
2. Compute the followings: (a) The probability that the project will finish by the end of day 50 (b) The probability that the project will finish at day 52 (c) The probability that the project will finish before the start of day 49. (d) The completion date with at least a 95% confidence level

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