Solve the following two questions on an empty spreadsheet with your own handwriting. Submit your work to the submission box, namely, "Midterm Exam - Part B (SUBMISSION BOX)" under Weekly Content -> Midterm Exam Table for Standard Normal is given under Weekly Content -> Midterm Exam ****You must apply the techniques that you have learned in the course to receive credits. 01) 15 pts Find the mistakes on the network and explain them briefly in bullet points. F G H A T B B D R E 02) 35 pts Activity Predecessor A1 A2 A1 A2 A4 A5 A6 A7 A8 A9 Optimistic Most Likely Pessimistic (weeks) (weeks) (weeks) 1 3 5 2 3 4 3 4 11 1 4 7 2 5 8 3 5 7 2 4 6 3 6 9 1 5 9 A2 A3, A4 A4 A4, A5 A6, A7, A8 Given the activity relationships and their optimistic, most likely and pessimistic durations; a) Draw project network diagram using Activity-on-Arrow method. b) What is the estimated project duration and the critical path? c) What is the probability that the project will be completed in 21.958 weeks? d) What is the probability that the project will be completed in 18.31 weeks