(Solved by Humans)-Calculate a confidence interval for a population mean. A sample
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Calculate a confidence interval for a population mean.
A sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares at $50 per share was $33.77 (AAII Journal, February 2006).? The survey is conducted annually.? With the historical data available, assume a know population standard deviation of $15.? Develop a 95% confidence interval for the mean price charged by discount brokers for a trade of 100 shares at $50 per share.
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This question was answered on: 10 May, 2025
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