Questions (a) Fill in table 1 below and answer the questions that follow. (key : a = Optimistic time; b = Most likely time; c = Pessimistic time, te = activity duration) (18 marks) Table 1. PROJECT ALASKA Activity a,b,c te S2 ES EF LS LF Total Slack Free Slack code A 0 B U 1,2,6 3,5,7 1,2,3 4,5,6 2,5,6 3,5,8 D E F (ii) Given that only activities E and F form the critical path (1) What is the project ALASKA's minimum completion time? (3 marks) (1) What is project ALASKA's duration variance? (3 marks) (b) Given that project Muzzo has a critical path time of 28 weeks with a variance of 3 weeks. What is the probability that the project will complete in 26 weeks. (Use a Z-statistics table) [6 marks)