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Ch10_PM_Solved_Problems

Ch10_PM_Solved_Problems - Chapter 10 Solved Problem 2...

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Chapter 10 - Solved Problem 2 Assignment: (completed) 1. Develop formulas for the ES/EF columns (Hint: use MAX function) 2. Develop formulas for the LS/LF columns (Hint: use MIN function) 3. Answer parts b, c, & d. Activity Time P1 P2 Slack A 1 0 1 1 0 0 B 4 A 1 5 5 1 0 C 3 A 1 4 9 6 5 D 7 A 1 8 9 2 1 E 6 B 5 11 11 5 0 F 2 C D 8 10 11 9 1 G 7 E F 11 18 18 11 0 H 9 D 8 17 18 9 1 I 4 G H 18 22 22 18 0 Answers: b. See above c. Critical path is A - B - E - G - I (Activities on Critical Path shown in Yellow) d. Change F's time to 4, the critical path changes with a completion time of 23. Immediate Predecessors Earliest Start Earliest Finish Latest Finish Latest Start
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Solved Problem 3 Activity Time Estimates a m b P1 P2 A 1 4 7 4.0 1.00 B 2 6 7 5.5 0.69 A C 3 4 6 4.2 0.25 A D D 6 12 14 11.3 1.78 A E 3 6 12 6.5 2.25 D F 6 8 16 9.0 2.78 B C G 1 5 6 4.5 0.69 E F Exhibit 10.8 - Activity Estimated Times and Variances A 4.0 0.0 4.0 4.0 0.0 0.0 1.0 B 5.5 4.0 9.5 19.5 14.0 10.0 C 4.2 15.3 19.5 19.5 15.3 0.0 0.3 D 11.3 4.0 15.3 15.3 4.0 0.0 1.8 E 6.5 15.3 21.8 28.5 22.0 6.7 F 9.0 19.5 28.5 28.5 19.5 0.0 2.8 G 4.5 28.5 33.0 33.0 28.5 0.0 0.7 6.5 = Variance of Critical Path 2.55 = Std. Deviation of Critical Path = indicates Critical path 34 = Project Due Date 0.39 = Calculated Z-value 0.653 = Probability of On-Time Completion Expected Time Activity Variance Immediate Predecessors Activity Designation Expected Time Earliest Start Earliest Finish
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