Question 2 Consider the network described in the table below. Immediate Predecessor(s) Pessimistic Activity Probable J Optimistic 15 10 K 8 L 7 J 10 6 5 М 3 3 N К.М K.M 5 10 7 4 P L.N 10 8 a. Draw the network diagram. (3 marks) b. Calculate the expected duration and variance of each activity (5 marks)