please answer this question in detail

Scenario 2: A network consists of the following list. Times are given in weeks. Optimistic Probable Pessimistic Expected Activity Preceding Time Time Time Time Variance 7 9 14 B A 2 N 8 1.00 8 12 16 12 1.78 D ul 10 5.5 1.36 E A B B 4 6 8 6 0.44 F 6 8 10 8 0.44 G CF 2. 3 4 3 0.11 H D N 8 3 1.00 N H H 6 CO 16 9 2.78 J GI 4 6 14 7 2.78 K EJ 2 2 2.5 0.25 E H points). Calculate the expected duration and variance of activity (Keep one decimal place for Expected duration and two decimal places for variance in your calculation & show your calculation step 2 points). What is the ES, EF, LS, LF time for activity (4 points. Wher activities for the crite path Calculate the duration of critical path points). Calculate the project warance and project standard deviation (Keep two decimal place in your calculation & show your calculation steps) ponese Calculate the probability that the project will be completed in more than 38 weeks Keep two decimal place in your calculation... X.XX&show your cakultation steps)