A Researcher Is Interested in Determining the Average Number of Years

question 20

Short Answer

A researcher is interested in determining the average number of years of employee retention in a company.If past information shows a population standard deviation of 9 months, what sample size should be taken so that, at 95% confidence, the margin of error will be 3 months or less?

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Definitions:

Independent Variable

The variable that is manipulated by the researcher to observe its effect on the dependent variable.

Loudness

A subjective perception of the intensity of sound, often measured in decibels, that impacts how sound is experienced.

Noise

Unwanted sound that is loud, unpleasant, or causes disturbance.

Correlational Study

A type of research design where the relationship between two variables is examined, without determining cause and effect.