(a) calculate the ES (Prec.), LS(Foll.) and the total float for all the activities, and hence identify the critical path . What is the mean completion time for the project? What is the standard deviation of the critical path?

(b) What is the 99% confidence interval for the length of the critical path?

(c) Assuming that the probability distribution of the length of the critical path can be approximated by a normal distribution with the mean and standard deviation calculated in part (a), calculate the probability of completing the project within 34 days

(d) What is the probability that the project will be completed between 38 and 45 days?

Activity Follows Estimates of Duration (Days) Optimistic Most Likely Pessimistic m 6 15 8 14 26 1 2 2 5 7 4 7 15 3 4 9 1.78 An COU WOI- 1 UNAONUNA Ow 9 5 7.11 2.78 - 0 10 4 - D,G 3 10 15 4 8 0.44 1.78 2.78