The Eastern 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 2 (below). Draw the network and answer the questions that follow. Table 2. ESCL Computerized Flood-Warning System Project Activity Description Immediate Predecessor(s) Time Optimistic (Weeks) Most Likely (Weeks) Pessimistic (Weeks) A --- 2 7 12 B --- 1 3 11 C A 3 6 9 D B 5 8 13 E D 2 5 8 F E 4 9 14 G C 3 4 5 H D, G 3 5 7 I D 6 7 14 (iii) Using the information from Table 2, what is the probability that the project can be completed in 28 days?
1. b. The Eastern 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 2 (below). Draw the network and answer the questions that follow.
Table 2. ESCL Computerized Flood-Warning System Project
Activity
Description
Immediate
Predecessor(s)
Time
Optimistic
(Weeks)
Most Likely
(Weeks)
Pessimistic
(Weeks)
A --- 2 7 12
B --- 1 3 11
C A 3 6 9
D B 5 8 13
E D 2 5 8
F E 4 9 14
G C 3 4 5
H D, G 3 5 7
I D 6 7 14
(iii) Using the information from Table 2, what is the probability that the project can be
completed in 28 days?
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