John Davis, a Manager of a Supermarket, Wants to Estimate

question 40

Multiple Choice

John Davis, a manager of a supermarket, wants to estimate the proportion of customers who use food stamps at his store. He has no initial estimate of what the sample proportion will be. How large a sample is required to estimate the true proportion to within 3 percentage points with 98% confidence?

• A) 756
• B) 1,849
• C) 1,067
• D) 1,509

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Definitions:

Population Size

The total count of individuals or entities to be studied or observed in a given population.

Sum of Scores

The total value obtained by adding together all scores in a set of data.

Mode

The data point that is most frequently observed in a dataset.

Independents

Variables in a statistical model that are presumed to influence or predict the outcome of dependent variables.