A Researcher Randomly Selects a Sample of Athletes and Reports

question 50

Multiple Choice

A researcher randomly selects a sample of athletes and reports that their average score on a health and fitness scale is 23.Based on the characteristics of the sample mean,what does this say about the mean in the population?

• A) Nothing; it was just a sample.
• B) There is no way to know without knowing the size of the sample.
• C) It tells us that the mean in the population is no less than 23.
• D) We expect that the population mean is equal to 23 because the sample mean is an unbiased estimator of the population mean.

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Definitions:

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