Chapter 17 - Project Management Activity Immediate Time Estimates Predecessor (Weeks) A 2-4-6 D 6-8-10 E 7-9-12 H 2-3-5 F 3-4-8 G 5-7-9 B 2-2-3 1 2-3-6 3-4-5 4-5-8 5-8-12 M 1-1-1 N M 6-7-11 0 N 8-9-13 END H, G, KO - - . - UZE 1. Draw the network diagram (see answer on next page) 2. What are the estimated expected/mean times for each activity? Round to two decimal places A=4; B=2.17; C+8.17; D-8; E-9.17; F=4.5; G=7; H=3.17; 1=3.33; Jn4; K=5.33; M=1; N=7.5;0=9.5 3. Identify the critical path and the mean time for project completion. C-M-N-O; MEAN COMPLETION TIME FOR THE PROJECT = 26.17 WEEKS 4. What are the estimated slack times (in weeks) for activities a, d, i, and m? A=1.83; D=1.83; I=11.34; M=0 5. What is the variance for each activity? Round to two decimal places A=.44; B-03; C-1.36; D=,44; E-.69; F=.69; G=.44; H-.25; 1=.44; J-.11; K=.44; M=0; N=.69; 0.69 6. What is the standard deviation for each activity? Round to two decimal places A-,66; B=.17; C-1.17; D-.66;E=.83; F=-83; G=.66; H-.50; 1=.66; J=.33; K=.66;M=0; N=-83; 0.83 7. What is the standard deviation for the critical path? Round to two decimal places C-M-N-O=1.82 8. What is the probability that this project will be completed within 28 weeks? There is an 84.38% chance the project will be completed within 28 weeks. 9. What is the probability that this project will not be completed within 28 weeks? There is a 15.62% chance the project will not be completed within 28 weeks