Industrial Engineering and Production Management
In CPM, the cost slope is determined by

(Normal cost - Crash cost)/ (Normal time - Crash time)
Crash cost/Normal Cost
Normal Cost/Crash cost
(Crash Cost - Normal cost)/ (Normal time - Crash time)

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Industrial Engineering and Production Management
The reasons which are basically responsible for the formation of a queue should be that

All of these
The average service rate Hess than the average arrival rate
Output rate is linearly proportional to input
Output rate is constant and the input varies in a random manner

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Industrial Engineering and Production Management
Critical Path Net Work helps an engineer

To be cautious for avoiding any delay in the critical activities to avoid delay of the whole project
To divert the resources from noncritical advanced activities to critical activities
To concentrate his attention on critical activities
All of these

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