I need help with solving this Excel problem I'm not really sure honestly how to do XL this is one of my first class is doing more stuff with excel in using formulas and I am not proficient at that so can you please show me formulas for the problem and how to get the answer because my professor requires formulas

keting cam Q:11-32 The estimated times (in weeks) and immediate pre- decessors for the activities in a project are given in the following table. Assume that the activity times are independent. Q:11 WEEKS IMMEDIATE PREDECESSORS M b a ACTIVITY 9 10 11 A 4 10 16 B 9 10 11 11 D B 5 8 (a) Calculate the expected time and variance for each activity (b) What is the expected completion time of the critical path? What is the expected completion time of the other path in the network? (c) What is the variance of the critical path? What is the variance of the other path in the network? (d) If the time to complete path A-C is normally distributed, what is the probability that this path will be finished in 22 weeks or less? (e) If the time to complete path B-D is normally distributed, what is the probability that this path will be finished in 22 weeks or less? (1) Explain why the probability that the critical path will be finished in 22 weeks or less is not necessarily the probability that the project will be finished in 22 weeks or less. 2:11-33 The following contoh Q:11