Following is the data of the associated with PERT Project.

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written 6.0 years ago by

teamques10 ★ 69k

• modified 4.9 years ago

Activity	A	B	C	D	E	F	G
Preceding activity	--	--	A	B	A	B	C & D
to (days)	6	5	4	4	4	2	4
tm (days)	9	8	7	7	7	5	10
tp (days)	12	17	22	16	10	8	22

Z	-3	-2	-1	0	1	2	3
P (%)	0.13	2.28	15.87	50	84.13	97.72	99.87

i) Determine the variance of the project.

ii) What is the probability of completing the project in 29 days?

iii) What is the scheduled duration with 90% probability?

construction management

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1 Answer

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written 6.0 years ago by

teamques10 ★ 69k

• modified 6.0 years ago

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Critical path = A – C – G

= 1 – 2 – 4 – 5

1] variance = 6 = 7 (for critical path)

2] probability of completing the project in 29 days

$Z = \frac{S.T – PD}{E}$

$Z = \frac{29 – 29}{\sqrt{6^2}} = \frac{0}{4.36}$

$Z = 0$

50% …

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