Industrial Engineering and Production Management
Pick up the incorrect statement from the following. A critical ratio scheduling

Determines the status of each activity
Establishes the relative priorities among various activities on a common basis
Adjusts automatically changes in activity progress
All of the these

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

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

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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

Arrival and waiting times are known and can be grouped to form a waiting line model
Complete details of items in, waiting line are known
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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