Construct the network for this project, identify the critical path, and determine the project duration time.

9.17. The following probabilistic activity time estimates are for the network in Problem 9.6:

	Time Estimates (Months)
Activity	a	m	b
1	4	8	12
2	6	10	15
3	2	10	14
4	1	4	13
5	3	6	9
6	3	6	18
7	2	8	12
8	9	15	22
9	5	12	21
10	7	20	25
11	5	6	12
12	3	8	20

Determine the following:

a. Expected activity times

b. Earliest start and finish times

c. Latest start and finish times

d. Activity slack

e. Critical path

f. Expected project duration and standard deviation