3.20 The estimated times and immediate predecessors for the activities in a project at George Kygatissretinal scanning company are given in the following table. Assume that the activaity times areindependent.TIME (WEEKS)IMMEDIATEACTIVITY PREDECESSORamA101141016A1011DB5811a) Calculate the expected time and variance for each activity.b) What is the expected completion time of the critical path? What is the expected completionthe other path in the network?ofc) What is the variance of the critical path? What is the variance of the other path in the network?d) If the time to complete path A-C is normally distributed, what is the probability that this path will befinished in 22 weeks or less?e) If the time to complete path B-D is normally distributed, what is the probability that this path will befinished in 22 weeks or less?L Explain why the probability that the critical path will be finished in 22 weeks or less is not necessarilythe probability that the project will be finished in 22 weeks or less.NOTE: ANSWER THE LETTERS C-F ONLY.

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Practical Management Science

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The estimated times and immediate predecessorsfor the activities in a project at George Kyparis’s retinal scan-ning company are given in the following table. Assume thatthe activity times are independent. a) Calculate the expected time and variance for each activity.b) What is the expected completion time of the critical path?What is the expected completion time of the other path inthe network?c) What is the variance of the critical path? What is the vari-ance of the other path in the network?d) If the time to complete path A–C is normally distributed,what is the probability that this path will be finished in22 weeks or less?e) If the time to complete path B–D is normally distributed,what is the probability that this path will be finished in22 weeks or less?f) Explain why the probability that the critical path will befinished in 22 weeks or less is not necessarily the probabil-ity that the project will be finished in 22 weeks or less.
The estimated times and immediate predecessors for the activities in a project a t George Kyparis's retinal scanning company are given in the following table. Assume that the activitytimes are independent. a) Calculate the expected time and variance for each activity.b) What is the expected completion time of the critical path?What is the expected completion time of the other path in the network?c) What is the variance of the critical path? Wha t is the variance of the other path in the network?d) If the time to complete path A-C is normally distributed, what is the probability that this path will be fini shed in 22 weeks or less?e) If the time to complete path B- D is normally distributed, what is the probability that this path will be finished in 22 weeks or less?f) Explain why the probability that the critical path will be finished in 22 weeks or…
1. The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent. Time (weeks) Immediate Time (weeks) Immediate Activity a m b Predecessor(s) Activity a m b Predecessor(s) A 9 10 13 — C 8 9 12 A B 5 11 16 — D 4 10 12 B This exercise contains only parts a, b, c, and d. a) Based on the activity time estimates, the expected times and variance for each of the activities are (round your response to two decimal places): Activity Expected Time Variance A _____ _______ B ______ ________ C ______ ________ D…
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 5 B B 8 − F 6 B C 4 A G 11 C, E D 3 A H 7 D , F Part 2 Dave's earliest start (ES) and earliest finish (EF) are: Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Part 10 Dave's latest start (LS) and latest finish (LF) are:…
The estimated times and immediate predecessors for the activities in a project at Howard Umrah's retinal scanning company are given in the following table. Assume that the activity times are independent. Time (weeks) Immediate Time (weeks) Immediate Activity a m b Predecessor(s) Activity a m b Predecessor(s) A 8 10 12 — C 7 10 11 A B 6 12 18 — D 6 10 12 B The expected completion time of the critical path = weeks (round your response to two decimal places).
Consider the following activities for a project. Answer the questions below. a. Assume the durations given are high confidence, create a network chart (don’t considerresources yet), and identify the critical path. What is the duration of the project? b. You aren’t quite ready to apply the critical chain project management yet, but you do want toeliminate multi-tasking. Eliminate any resource contention in your network. Identify the criticalpath now? What is the duration of the project? c. Apply the critical chain project management approach to this project. Create a new view ofyour project network, include a project buffer and any needed feeding buffers. What is the criticalchain? What is the duration of the project now?
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 B B 6 − F 5 B C 4 A G 10 C, E D 2 A H 8 D , F Part 2 Dave's earliest start (ES) and earliest finish (EF) are: Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Part 10 Dave's latest start (LS) and latest finish (LF) are:…
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 ? ?
#3) Consider the following project, all durations are in days. Construct a precedence diagram, find the critical path and which tasks have slack and how much each has. Which tasks would you recommend crashing to reduce the project duration by six days assuming that it costs the same to crash each task and no task by be crashed to more than half its original duration and tasks A and N cannot be crashed at all? Task Predecessors Most Likely Duration A - 8 B A 12 C A 6 D A 12 E B 10 F E 7 G C 18 H C 13 I G 10 J H 13 K D 10 L K 11 M L 7 N F, I, J, M 4 Note:- Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism. Answer completely. You will get up vote for sure.
To design a new app, a project manager has gathered the time information foreach activity as shown in the following table:Activity Predecessors Optimistic Most Likely PessimisticA / 1 4 7B / 2 6 10C B 3 3 9D A 6 13 14E A, C 4 6 14F B 6 8 16G D,E,F 2 5 8Identify the critical path. How much slack time is associated with each noncritical activity?Suppose you wanted to have 99% confidence in the project finishing on time. How manyweeks in total would your project team need to achieve this 99% likelihood?
I need a detailed explanation and assistance to solve the this problem: A company decides to plan a project, with activities, precedences and deterministic durations given in the following table: Activity i Duration (days) Immediate Predecessors A 32 none B 21 none C 30 none D 45 A E 26 A, B F 28 C G 20 E, F a) What method should be used? Using only one pseudo-activity, draw the project network, with arcs labeled by the activity name and duration. b) Compute and display in a table the earliest and latest starting and finishing times, as well as slack, for each activity, and identify the critical path(s). C) Draw a Gantt chart of the schedule, based on earliest starting times d) Which activities must be completed by day 60 to ensure that the project is not delayed?
You are provided with the following information for a project, with activity durations given in weeks: Activity Immediate Optimistic Most Likely Pessimistic Predecessor Time (a) Time (m) Time (b) A ____ 2 3 4 B ____ 2 4 6 C A 1 2 3 D B 3 6 9 E C, D 7 8 9 F D 4 7 10 G E 3 4 5 H E, F…

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