Industrial Engineering and Production Management
Pessimistic time is

The minimum time in which an activity can possibly be accomplished
The average time required for a job
The maximum time which an activity might require
The most probable time considering all conditions

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Industrial Engineering and Production Management
The process capability of a machine is defined as the capability of the machine to

Perform definite number of operations
Produces a definite volume of work per minute
Holds a definite spectrum of tolerance and surface finish
Produce job at a definite spectrum of speed

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