Problem 5 . The following probabilistic activity time estimates are for a CPM/PE

Question

Problem 5.

The following probabilistic activity time estimates are for a CPM/PERT network.

Time Estimates (days)

Time Estimates (days)

Activity

a

m

b

Activity

a

m

b

1

1

2

6

7

1

1.5

2

2

1

3

5

8

1

3

5

3

3

5

10

9

1

1

5

4

3

6

14

10

2

4

9

5

2

4

9

11

1

2

3

6

2

3

7

12

1

1

1

Determine the following:

Expected activity times

Earliest start and finish times

Latest start and finish times

Activity Slack

Critical Path

Expected Project duration and standard deviation.

Time Estimates (days)

Time Estimates (days)

Activity

a

m

b

Activity

a

m

b

1

1

2

6

7

1

1.5

2

2

1

3

5

8

1

3

5

3

3

5

10

9

1

1

5

4

3

6

14

10

2

4

9

5

2

4

9

11

1

2

3

6

2

3

7

12

1

1

1

Explanation / Answer

as per the given network diagram

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