Q1: Calculate the Total Float and Free Float for every activity:

TF: 2 10 F 22 TF:0 FF:0 FF: 0 0 3 C 8 10 10 22 2 2 Lag 2 22 H 28 5 5 10 0 0 Lag 3 8 E 19 22 6 28 A 0 0 TF:0 FF:0 8 6 19 TF:0 3 FF:0 17 G 21 Lag 4 1 TF: 0 1 3 FF:0 B 15 18 4 22 0 15 D 17 3 12 15 1 1 TF: 1 16 2 18 FF: TF: 0 FF:0 TF: 1 FF:Question 4: (2.5 marks) You are appointed as the project manager of a construction firm which has recently signed a redevelopment contract with a horse racing club to make substantial improvements to one of their flagship racecourses. Based on the following project information and CPM network: Calculate the probability of completing the project by the end of week 19. 11. Calculate the project duration with 97% confidence level. III. Calculate probability of completing the project before 21. Activity ID Duration (Week] Optimistic Most likely Pessimistic A 2 5 8 B 9 C 2 10 D 2 3 m 4 13 TI 13 G 1 4 Lag +5 B E A D G C FDuration (Weeks) Activity Optimistic Most Likely Pessimistic TE VE To Im A 2 5 8 5 1 1 B 1 2 9 3 1.333 1.778 C 2 3 10 4 1.333 1.778 D 1 IN 3 0.333 0.1111 E 1 4 13 5 2 4 F 3 5 13 6 1.667 2.778 G 1 4 7 4 1 1