Please refer to the table below and answer all the questions. Begin your answers from the next page Activity Optimistic Most Likely Pessimistic predecessor A 2 4 8 - B 2 2 2 - C 1 5 7 A D 4 5 6 A E 3 5 9 C,B F 1 0 5 C, B G 2 7 9 C, B 1) Draw a AON Network with all features: 2) Calculate the Expected values for all activates, variances, and the slack (float) 3) The Critical Path and the Expected completion time (TE) 4) The probability that the project will be completed in 22 days 5) The completion time corresponding to a 99% probability QUESTION 1 AON DIAGRAM LEDGEND: ES EF Activity, TE, Variance LS LF Question 2 ANSWER Activity a m b TE Variance Slack (float) A 2 4 8 B 2 2 2 C 1 5 7 D 4 5 6 E 3 5 9 F 1 0 5 G 2 7 9 Question 3 ANSWER CRITIAL PATH Question 4 & 5 Where: D = Desired Project Completion Time = Critical Path Duration = Sum of variance of the CP Q6 CV- Cost Variance- The difference between the earned value and the actual cost. SV Schedule variance. The difference between the earned value and the planned value. TV- Time Variance. The difference between time schedule for work performed and the actual time take for the work performed. Also represented as: TV= SV/(PV/AT) CPI Cost performance index. The ratio of the earned value to the actual cost. SPI Schedule Performance index. The ratio of the earned value to the planned value. CSI- Cost Schedule Index. Cost performance index * schedule performance index Question 6 (parts a- f) Project New Concentration at your company work breakdown structure has outlined the following activities: Activity Predecessor Normal Time (TE) in Days A: Obtain Instructor - 7 B: Locate a Room A 3 C: Check Costs - 6 D: Room Availability C 3 E: Schedule Classes B, D 2 a) Construct a AON network diagram: b) Show the ES/EF, LS/LF, and the slack for all activities c) Show the critical path ( write it out below the network) For the next set of question s refer to the table below: Activity Crash Time (in days) Crash Cost (total) Normal Time (TE) in Days Normal Cost (total) Crash Cost per day A: Obtain instructor 4 $ 800 7 $ 500 B: Locate a Room 2 $ 350 3 $ 200 C: Check Costs 4 $ 900 6 $ 500 D: Room availability 1 $ 500 3 $ 200 E: Schedule Classes 1 $ 550 2 $ 300 d) Find the crash cost per day for each activity, enter in the table above e) Which activity should be crashed to meet a project deadline of 10 days (assume partial crashing is allowed for all activities) f) Find the new cost. Question 7: A Project to develop software is 7 days behind at day 60. It has a planned cost of $830 for this point in time. The actual cost is $645. Estimate variances and give your answer to the health of the project. Re- estimate the variance and give you answer to the health of the project, if the actual cost had been $745 [left table] AC = $645 AC = $745 Day AC PV EV Day AC PV EV CV CV CPI CPI SV SV SPI SPI CSI CSI TV TV