Table H.1 A Worker Was Observed for Four Cycles in a Repetitive

question 55

Multiple Choice

Table H.1
A worker was observed for four cycles in a repetitive task that contains four distinct elements. The observer recorded the following items in seconds, using the snap-back method:

-The observer assigned a performance rating factor of 1.15 to the worker and the company employs an allowance factor of 20%. How many more observations must be made in order to develop an estimate of the select time for Element 4 that is within 5% with 95% accuracy?

• A) 1
• B) 3
• C) 5
• D) 7

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Definitions:

Keratinized

Refers to tissue or cells that have become hard and water-resistant due to the accumulation of keratin.

Shaft

The long, slender portion of a long bone or hair.

Epidermis

The outermost layer of the skin, providing a waterproof barrier and creating our skin tone.

Hair Root

The part of the hair located below the surface of the skin, from which the hair grows.