SOLUTION: An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years; it is known that the population standard devi
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Question 917163: An economics professor randomly selected 100 millionaires in the United States. The average age of these millionaires was 54.8 years; it is known that the population standard deviation is σ = 7.9 years.
What is the 95% confidence interval for the mean age, μ, of all United States millionaires? Answer by ewatrrr(24785) (Show Source):
