Practical Management Science
Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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An electronic contractor is examining the amount of time his crews take to complete wiring jobs. Some crews take longer than others. For an upcoming job, a list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table.

 

Days

 

Activity

a

m

b

Immediate Predecessors

A

2

5

8

-

B

1

3

5

-

C

1

2

3

-

D

5

6

7

C

E

1

3

5

B, D

F

5

9

13

A, E

G

1

2

3

A, E

H

2

5

8

F

I

9

10

11

G

J

13

15

20

G

K

4

7

10

H, I

Use excel to answer the following;

a) Develop a project network for this problem.

b) Determine the expected duration and variance for each activity. 

c) Determine the EST, EFT, LST, LFT, and slack for each activity.

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