Industrial Engineering and Production Management
Pick up the incorrect statement about advantages of work sampling

Permits a fine breakdown of activities and delays
Calculations are easier, method is economical and less time consuming
Simultaneous study of many operators may be made by a single observer
No time measuring devices are generally needed

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Industrial Engineering and Production Management
The important file in making a PERT is

An event can't be accomplished until activities leading to it are completed
Length of arrow has nothing to do with time
No activity from any event can be started from preceding event till it is completed
All of the these

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