Consider the network described in the table below. (Round your answers to two decimal places) Immediate Activity Predecessor(s) Pessimistic Probable Optimistic J 15 10 8 K 9 8 7 L J 10 6 5 M J 3 3 3 N M 9 5 1 O KM 10 7 4 LN 10 8 3 won a) Calculate the expected duration, variance, ES, EF, LS, LF, and slack of each activity. Use a table similar to the table below. t variance Late Task Early Start Early Finish Late Start Finish J Slack K L M N Late Task Early Start Early Finish Late Start Finish t variance Slack J K L M N 0 P b) Calculate the expected duration and variance of the critical path. c) Calculate the probability that the project will be completed in fewer than 24 time units