A Methods and Measurements Analyst Needs to Develop a Time

question 146

Multiple Choice

A methods and measurements analyst needs to develop a time standard for a certain task. In a preliminary study, he observed one of his workers perform this task five times, with the following results:

How many observations should be made if the analyst wants to be 99.74 percent confident that the maximum error in the observed time is 2 seconds? Assume that the standard deviation of the task time is 4 seconds.

• A)5
• B)6
• C)25
• D)36
• E)49

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Definitions:

DVD Players

Electronic devices designed to play discs in the DVD format, capable of producing both sound and video from digital optical disc storage.

Income Elasticity

A measure of how much the demand for a product or service changes relative to a change in consumers' income levels.

Normal Good

A good for which demand increases as the income of consumers increases and decreases as the income of consumers decreases.

Price Elastic

Pertains to a measurement in economics of how responsive an economic variable's quantity is to a change in its price.