Industrial Engineering and Production Management
The assumption in PERT is

Activities are fixed and can't be changed
Cost of project will always be more than the estimated cost, if no timely corrections are taken
A project can be subdivided into a set of predictable, independent activities
A project will always be behind schedule, if left uncorrected

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Industrial Engineering and Production Management
Which of the following are the guidelines for the construction of a network diagram?

Each activity is represented by one and only one arrow in the network
Dangling must be avoided in a network diagram
All of the these
Dummy activity consumes no time or resource

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