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Two investigators are interested in studying the health of men 18-24 years old in Baltimore City. Investigator A plans to take a random sample of

Two investigators are interested in studying the health of men 18-24 years old in Baltimore City. Investigator A plans to take a random sample of 100 men age 18-24 from Baltimore City. Investigator B will take a random sample of 1,000 such men. Both investigators will measure the waist size of men in their samples.

Which investigator will definitely get the sample mean closest to the true population mean among all male 18-24 year olds in Baltimore City?

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