95% confidence interval for the mean age
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An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years with a standard deviation of 7.9 years. What is the 95% confidence interval for the mean age, poplulation mean of all United States millionaires?
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The expert examines 95% confidence intervals for the mean age.
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- BE, Bangalore University, India
- MS, University of Wisconsin-Madison
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