Question: Given the activities described by the following table: Activity Expected Time STD of Time Estimate Predecessor A 7 2 - B 3 1 A C

Given the activities described by the following table:

Activity Expected Time STD of Time Estimate Predecessor
A 7 2 -
B 3 1 A
C 9 3 A
D 4 1 B,C
E 5 1 B,C
F 8 2 E
G 8 1 D,F
H 6 2 G

a. What is the critical path and project time?

A, C, D, G, H - 45

b. What is the project variance and STD? 23 and 4.8

23 and 4.8

c. Find the probability that the project will take more than 49 periods to complete

10.6%

Those are the answers. Can you please show step-by-step for how you do this?

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