Given the following AON network and activity time estimates, determine the expected project completion timeand variance, as well as the probability that the project will be completed in 28 days or less:StartFinishTime Estimates (weeks)Activitym517271013374355466.3334

Determine the expected time and variance for every activity as follows - Time (t)=a+4m+b6 Variance…

Answered: Given the following AON network and…

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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Using the information given and the project completiontime calculated in Problem 9(a), reduce the completion time ofthe project by 3 weeks in the most economical way.
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A project has seven (7) main activities labelled A through G as shown in the below table which also shows their estimated duration times ( in weeks) and immediate predecessors. Activity a b Immediate Remarks predeccessor A 1 2 3 a = optimistic time 2 3 4 m = most likely time C 4 A b = pessimistic time 8 9 10 E 2 5 8 C,D 4 6. G 1 2 3 E (a) Develop a project network for this problem.
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2. The time estimates (in weeks) for the activities of a PERT network are given below. (i) (ii) 1-2 1-3 1-4 2-5 3-5 4-6 5-6 18 9 10 8 16 7 Activity to 24 16 3 tm 7 9 20 14 2 tp 9 20 11 11 28 18 4 Draw the project network and calculate the project length. Calculate the standard deviation and variance along the critical path. (iii) Find the probability of completing the project one day earlier and 2 days later.
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Charlie Cook was able to determine the activity times for constructing his chemical contaminant tracking machine. Cook 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: Q Activity Time (weeks) Immediate Predecessor(s) Activity Time (weeks) Immediate Predecessor(s) A B C D 7 8 2 1 Charlie's earliest start (ES) and earliest finish (EF) are: A A Activity A EFGH ES EF 7 5 7 11 8 B B C, E D, F

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Given the following AON network and activity time estimates, determine the expected project completion time and variance, as well as the probability that the project will be completed in 28 days or less: Start Finish Time Estimates (weeks) Activity m b 8 17 2 7 10 13 3 5 4. 3. 4 6. 6. 3. 3. 3 3. 7.