Question: 3. Activity a m Variance b Immediate Predecessors average time M C U ALL 3 6 9 2 4 6 6 7 8 1 2

3. Activity a m Variance b Immediate Predecessors

3. Activity a m Variance b Immediate Predecessors average time M C U ALL 3 6 9 2 4 6 6 7 8 1 2 3 2 4 12 6 8 10 B C, D A, E DDDDDDDDD a) Compute average time and variance of each activity. (5 pts.) b) What is the probability that path B-D-E-F will be completed within 21 days. (5 pts.) c) What is the probability that path C-E-F will be completed within 22 days. Compute the z value. (7 pts.)

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