Suppose a Department Store Wants to Estimate the Average Age

question 137

Short Answer

Suppose a department store wants to estimate the average age of the customers of its contemporary apparel department, correct to within 2 years, with level of confidence equal to 95%. Management believes that the standard deviation is 8 years. The sample size they should take is ____.

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Definitions:

Families

Groups of individuals related by blood, marriage, or adoption, who often live together, forming a basic social unit.

Bullied

The experience of being intimidated, harassed, or abused by others, typically in a social, school, or work context.

Disclosed

Made known or revealed, often something that was previously secret or private.

Fine Motor Skills

The ability to perform detailed movements with the small muscles of the hands and fingers, such as writing or buttoning a shirt.