Question: QUESTION FOUR [25] 4.1 The following table represents a project you are working on. Activity Predecessor Time (days) Optimistic Time (days) Most likely Time (days)

QUESTION FOUR [25] 4.1 The following table represents a project you are working on.

Activity

Predecessor

Time (days)

Optimistic

Time

(days)

Most likely

Time (days) Pessimistic

t

v

a

-

15

18

25

b

-

15

18

20

c

a,b

6

10

12

d

c

18

24

26

e

d

13

19

25

f

d

12

18

23

g

d

15

17

19

h

f,g

22

25

30

i

e,f

11

15

17

4.1 Calculate the time (t) and variance (v) for each activity. (8)

4.2 Describe how the network diagram (AON) can be used for the information presented above. (diagram not required) (12)

4.3 Identify the paths and the critical path. (5)

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