# Draw PERT network for the following table and calculate (i) Expected time and variance for each...

## Question:

Draw PERT network for the following table and calculate:

(i) Expected time and variance for each activity.

(ii) Probability f completing the project in 32 days.

(iii) Total project duration.

(iv) Critical path.

Activity Estimated time (days)
To Tm Tp
1-2 2 5 8
1-3 1 4 7
2-3 0 0 0
2-4 2 4 6
2-6 5 7 12
3-4 3 5 10
3-5 3 6 9
4-5 4 6 10
4-6 2 5 8
5-6 2 4 6

## Pert Network:

The Pert network is used to analyze the duration of any project. Its calculation is based on three-time estimations. The Pert method gives the variance and estimation time between the two activity points for a project.

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Given data

• The project scheduled time is: {eq}{T_s} = 32\;{\rm{days}} {/eq}

(i)

The expected time for the activity 1-2 is as follows,

{eq}\beg...