What is the earliest start (ES) and earliest finish (EF) times?
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Starting the backward pass with activity I, the latest finish time is LF = 26 and that the activity time is t = 2. And the latest start time for activity I is LS = 24. What is the earliest start (ES) and earliest finish (EF) times?
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- Limbo Technologies has embarked on another project that has an estimated completion time of 40 weeks and a standard deviation of 5 weeks. It is estimated that the project completion time is normally distributed. i)What is the probability of finishing the project in 38 weeks or less? ii)The due date for the project is set so that there is a 90% chance that it will finish by this date. What is the due duration? ACTIVITY PREDECESSOR NORMAL TIME (WEEKS) CRASH TIME (WEEKS) NORMAL COST ($) CRASH COST ($) A - 4 2 1000 1600 B - 6 3 3000 3500 C A 3 1 2500 3000 D A,B 6 5 1500 1850 E D 4 2 3500 4200 F C 4 3 2250 3000 G D 3 2 1900 2500 H F,G,E 2 1 400 500How long it will take for each activity on the network chart is all but one of the following. Estimated duration The elapsed time that will be required Equal to the early start O Expressed in the same time units - days, hours, months, years. With activities B and C as immediate predecessors, the earliest start time for activity H must be equal to the largest of the earliest finish times for activities B and C. Thus, with EF = 6 for activity B and EF = 9 for activity C, 9 is the earliest start time for activity H (ES = 9). And with an activity time of 12 as shown in the node for activity H, what is the earliest finish time?
- A Company wants to execute a project within 95 weeks. This project includes 10 activities (labeled A, B, ..., J), where their precedence relationships are shown in the following table: Predecessor Normal Crash Normal Cost Crash Cost Activity Activity Time(weeks) Time(weeks) (in million S) (in million S) A 32 28 160 180 В 28 25 125 146 C A 36 31 170 210 D B 16 13 60 72 E 32 27 135 160 B 54 47 215 257 D 17 15 90 96 H E,G 20 17 120 132 E,G 34 30 190 226 F.C 18 16 80 84 a) Draw the project network according to the previous table. (b)Find all possible paths and the corresponding lengths to finish the project. (c) Which is the critical path and what is its length? (d) Determine the least expensive way to crash activities to reduce overall duration to 95 weeks using Marginal cost analysis.In a traditional project, the project manager saves the project schedule as a baseline plan in project management software. During the course of the project, the variance reports are created to show the difference between planned and actual activities. Project monitoring and control is different in agile projects than traditional projects. In an agile project, different tools and techniques are used to monitor and control project schedules. How does it help a project manager to monitor cost and schedule in a traditional project? There are different techniques for monitoring schedule performance in a traditional project. One method is a schedule variance report. How is a schedule variance report different from schedule variance in earned value? Does the role of the project manager change when monitoring and controlling agile projects?You are in charge of a project at the local community center. The center needs to remodel one ofthe rooms in time for the start of a new program. Delays in the project mean that the center mustrent other space at a nearby church at additional cost. Time and cost data for your project arecontained in below table. Your interest is in minimizing the cost of the project to the communitycenter.Using the normal times for each activity, what is the earliest date you can complete the project?Suppose the variable overhead costs are $50 per day for your project. Also, suppose that thecenter must pay $40 per day for a temporary room on day 15 or beyond. Find the minimum-costproject schedule using below format.The AON diagram for the community center project is below. Crash 4 times and find total cost.
- A project consist of 5 activities A,B,C,D,E with ES, EF, LS and LF of A (0, 6, 9, 15); B (0, 7, 0, 7); C (6, 13, 15, 22); D (7, 13, 7, 13); E (13, 22, 13, 22). Normal Time (in month), Crash time (in month), Normal cost (in million Rp), Crash cost (in million Rp) from each activity are A (6, 4, 20, 24); B (7, 5, 30, 35); C (7, 6, 10, 13); D (6, 4, 20, 26); E (9, 8, 88, 90) a. What activities are in the critical path? How long is the project duration? b. If we want to crash the project for 2 months, what activities need to be crashed? How much additional cost required?Activity Q on a project has exactly 4 successors E, F, G, and H whose late start days are 20, 12, 38, and 32. (Here "day" means days after project start and successor in this context means that E, F, G, and H are all dependent on Q.) What is the late finish day of Q?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
- You have prepared the following schedule for a project in which the key resource is a backhoe. This schedule is contingent on having 3 backhoes. You receive a call from your partner, Brooker, who desperately needs 1 of your backhoes. You tell Brooker you would be willing to let him have the backhoe if you are still able to complete your project in 11 months. Develop a resource schedule to see if it is possible to complete the project in 11 months with only 2 backhoes. Activities 5 and 6 require 2 backhoes, while activities 1, 2, 3, and 4 require 1 backhoe. No splitting of activities is possible.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.You have the following time and cost information for use in a time-cost CPM scheduling model. Normal Time Crash Time Normal Cost Crash Cost $400 $600 $1200 $1500 Activity A B C 3 5 4 2 3 1 $600 $300 What are the three costs per unit of time to expedite each activity? A. A = $300, B = $200, C = $300 B. A = $100, B = $200, C = $400 C. A= $200, B = $200, C = $200 D. A = $100, B = $400, C = $300 E. A = $200, B = $300, C = $400