you are working on a project that has 12 activities and want to perform a CPM an

Question

you are working on a project that has 12 activities and want to perform a CPM analysis on the project. You determine the critical path consists of only five activities. You then compute the variances for the five critical path activities and these variances are 5, 4, 6, 4, and 6 days. If the desired completion date for the project is 35 days and the expected completion date for the project is 40 days, what is the probability that the project will be completed by the desired completion date?

options are:

0.11507
0.10565
0.09680
0.15866
0.19766

Explanation / Answer

Variance of critical path = 5+ 4+6+4+ 6 =25

Standard deviation of critical path =25 = 5

P(35-40/5) = (-1) = 0.15866

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