A sample survey of 54 discount brokers showed that the mean price charged for a trade of 100 shares
Question: 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 known population standard deviation of $15.
(a) Using the sample data, what is the margin of error associated with a 95% confidence interval?
(b) Develop a 95% confidence interval for the mean price charged by discount brokers for a trade of 1 00 shares at $50 per share.
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Answer: The solution consists of 2 pages
Deliverables: Word Document
Deliverables: Word Document