please solve using excel, showing all formulas if possible.

Consider the project described in the table below. Times are in days. Activity Predecessors Optimistic Most likely Pessimistic Expected Critical Path (a) (m) b) duration Variances J 8 10 15 K 7 8 9 L J 5 6 10 M 3 3 3 N KM 1 5 9 O KM 7 10 P LN 3 8 10 a. Calculate the expected duration of each activity and show your computations in the highlighted column above.. b. Draw a complete network for this project and determine the Critical Path and expected completion time of this project. Write your answers below. Critical Path Completion time in days = c. Calculate the variances of the activities on the critical path and show your computations in the above table d. Calculate the probability that the project will be completed in less than or equal 30 days. e Provide the detailed activity schedule below. ACTIVITY ES EF LS LF SLACK K L M N O