(Solved): a)Calculate the expected time and variance for each activity. b) What is the expected completion ti ...

a)Calculate the expected time and variance for each activity. b) What is the expected completion time of the critical path and the other path? c) 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? d) 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?