Question: Dummy PERT problem 1 Draw the network and identify the critical path for the following project. Please calculate the earliest-latest start and finishing times for

Dummy PERT problem 1

Draw the network and identify the critical path for the following project. Please calculate the earliest-latest start and finishing times for each activity. Please show the expected time for 68%, 90% and 95% confidence limit for the project:

Activity Preceding Activity Time (weeks) Optimistic Time. Pessimistic time

A ___ 4 2 6

B ___ 6 5 7

C A, B 7 5 9

D B 8 7 9

E B 5 2 8

F C 5 1 9

G D 7 6 8

H D, E 8 6 10

I F, G, H 4 3 5

Please note

A and B Activities originate from the Start Node
C needs both A and B to start, but they are at different times
A Dummy activity has 0 time, ES=EF match end of preceding activity, LS = LF match the beginning of following activity
Activity H needs both D and E to finish before starting
Activity I is the end activity with the 3 input activities: F G & H

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