Question 868532
The mean age of the 43 presidents of the United States (as of 2011) on the day of
inauguration is 54.6 years, with a standard deviation of 6.3 years. A researcher constructed a 95% confidence interval for the mean age of presidents on inauguration day. He wrote that he was 95% confident that the mean age of the president on inauguration day is between 52.7 and 56.5 years of age. Is there anything wrong with the researcher’s analysis? Explain.
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It's the average age of the presidants that will be in
that range ages, not the age of any particular present.
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Cheers,
Stan H.