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

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

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

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

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