How Many Observations Should Be Made If She Wants to Be

question 146

Multiple Choice

How many observations should be made if she wants to be 95.44 percent confident that the maximum error in the observed time is two seconds? Assume that the standard deviation of the task time is 6 seconds.

• A)5
• B)6
• C)30
• D)36
• E)49

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Definitions:

Health Problem

An illness, injury, or condition that negatively affects an individual's physical or mental well-being.

Readiness To Change

A person's willingness and preparedness to make alterations in their behavior or lifestyle.

Assess

The act of evaluating or determining the nature, ability, or quality of something.

Methods

Systematic and organized ways of doing something to achieve a goal, often following a specific procedure or set of rules.