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

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

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Industrial Engineering and Production Management
Under the Apprenticeship Act

Industries have to train apprentices according to their requirement
All industries employing more than 100 workers have to recruit apprentices
Only industries employing more than 500 workers have to recruit apprentices
All industries have to necessarily train the apprentices

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