In: Operations Management
The Farmer’s American Bank of Leesburg is planning to install a new computerized accounts system. Bank management has determined the activities required to complete the project, the precedence relationships of the activities, and activity time estimates as follows:
TIME ESTIMATES (WEEKS) |
|||||
ACTIVITY |
DESCRIPTION |
ACTIVITY PREDECESSOR |
a |
m |
b |
A |
Position recruiting |
— |
5 |
8 |
17 |
B |
System development |
— |
3 |
12 |
15 |
C |
System training |
A |
4 |
7 |
10 |
D |
Equipment training |
A |
5 |
8 |
23 |
E |
Manual system test |
B, C |
1 |
1 |
1 |
F |
Preliminary system changeover |
B, C |
1 |
4 |
13 |
G |
Computer-personnel interface |
D, E |
3 |
6 |
9 |
H |
Equipment modification |
D, E |
1 |
2.5 |
7 |
I |
Equipment testing |
H |
1 |
1 |
1 |
J |
System debugging and installation |
F, G |
2 |
2 |
2 |
K |
Equipment changeover |
G, I |
5 |
8 |
11 |
Determine the earliest and latest activity times, the expected completion time and standard deviation, and the probability that the project will be completed in 40 weeks or less.