The Engineering Solutions Company Limited (ESCL) ha for, and won a contract to design and build a computerize warning system in Trinidad and Tobago. Consider the ac durations, and predecessor relationships to roll out this the following network, shown in Table 7 below. Draw the and ans wer the questions that follow
The Engineering Solutions Company Limited (ESCL) ha for, and won a contract to design and build a computerize warning system in Trinidad and Tobago. Consider the ac durations, and predecessor relationships to roll out this the following network, shown in Table 7 below. Draw the and ans wer the questions that follow
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
![The Engineering Solutions Company Limited (ESCL) has tendered
for, and won a contract to design and build a computerized flood-
warning system in Trinidad and Tobago. Consider the activities,
durations, and predecessor relationships to roll out this project, in
the following network, shown in Table 7 below. Draw the network
and answer the questions that follow.
ESCL Computerized Flood-Warning System Project
Immediate
Activity
Description Predecessor(s)
Time
Optimistic Most Likely Pessimistic
(Weeks)
(Weeks)
(Weeks)
A
4
1
4
7
---
C
A.
2
2
2
D
В
1
7
10
D
4
F
E
1
2
3
G
C
17
H
D, G
3
7
11
I
D
8
10
J
F, H
4
5
K
I
1
1
1
a) Using a network, what is the earliest expected time of
completion of the whole
project?
c) Using the information from Table 7, what is the probability that
the project can be completed in 28
days?
d) Using the information from Table 7, if the project manager
wants at least a 98% probability that the project will be
completed on or before the due date, what is the shortest
project due date that will satisfy the project
manager?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F27a6d3a5-bfda-4314-9083-95bfc1b27388%2F51d1d085-f6fe-4ddb-bafe-b7fbebfa5786%2Fjte425_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The Engineering Solutions Company Limited (ESCL) has tendered
for, and won a contract to design and build a computerized flood-
warning system in Trinidad and Tobago. Consider the activities,
durations, and predecessor relationships to roll out this project, in
the following network, shown in Table 7 below. Draw the network
and answer the questions that follow.
ESCL Computerized Flood-Warning System Project
Immediate
Activity
Description Predecessor(s)
Time
Optimistic Most Likely Pessimistic
(Weeks)
(Weeks)
(Weeks)
A
4
1
4
7
---
C
A.
2
2
2
D
В
1
7
10
D
4
F
E
1
2
3
G
C
17
H
D, G
3
7
11
I
D
8
10
J
F, H
4
5
K
I
1
1
1
a) Using a network, what is the earliest expected time of
completion of the whole
project?
c) Using the information from Table 7, what is the probability that
the project can be completed in 28
days?
d) Using the information from Table 7, if the project manager
wants at least a 98% probability that the project will be
completed on or before the due date, what is the shortest
project due date that will satisfy the project
manager?
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