Industrial Engineering and Production Management
Work study is mainly aimed at

Determining the most efficient method of performing a job
Establishing the minimum time of completion of a job
Developing the standard method and standard time of a job
Economizing the motions involved on the part of the worker while performing a job

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Industrial Engineering and Production Management
In queuing theory, the nature of the waiting situation can be studied and analysed mathematically if

Complete details of items in, waiting line are known
Arrival and waiting times are known and can be grouped to form a waiting line model
All variables and constants are known and form a linear equation
The laws governing arrivals, service times, and the order in which the arriving units are taken into source are known

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