A Task Involves Positioning Two Metal Parts with a Rubber

question 68

Essay

A task involves positioning two metal parts with a rubber gasket sandwiched between them,inserting two bolts into predrilled holes,threading a nut onto each bolt,and tightening each bolt with a pneumatic wrench.In a preliminary study,the manager observed one of his workers perform this task five times.The observations were made in an air-conditioned,well-lighted training facility,at ground level,with all tools and equipment clean and readily available.
a.What is the average observed time for this task?
b.What is the normal time for this task if the employee worked at a 10% slower pace than is typical for adequately trained workers?
c.What is standard time for this task if allowances are 7% constant and 5% variable?

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Definitions:

Pupil

The opening in the center of the iris of the eye that regulates the amount of light that enters the eye.

Light Waves

Electromagnetic waves within a certain portion of the electromagnetic spectrum, perceived by the human eye as light.

Proprioception

The sense of the relative position of one's own parts of the body and strength of effort being employed in movement.

Vestibular Sense

The sensory system that provides the leading contribution to the sense of balance and spatial orientation for the purpose of coordinating movement with balance.