Question: please answer b, e, and f. thank you A network consists of the following list. Times are given in weeks: Activity a m b Predecessor

please answer b, e, and f. thank you

A network consists of the following list. Times are given in weeks: Activity a m b Predecessor 4 7 10 A B 6 8 12 7 9 12 D 5 8 11 AB E 4 6 9 F 9 11 15 D, E a. What is the length of the project? 27.66 weeks b. What is the project standard deviation Select] c. What is the expected time for activity C? 9.17 weeks d. How much stack is there in activity B? 1 week e. What is the probability of finishing the project in less than 26 weeks? Select) f. How many wecks would be required to be 95% sure of completion? Select

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