A sample survey of 62 discount brokers showed that the mean price charged for a trade of 100 shares at $50 per share was $35.22. The survey is conducted annually. With the historical data available, assume a known population standard deviation of $19. A. Using the sample data, what is the margin of error in dollars associated with a 95% confidence interval? (Round your answer to the nearest cent.) B. Develop a 95% confidence interval for the mean price in dollars charged by discount brokers for a trade of 100 shares at $50 per share. (Round your answers to the nearest cent.) $ _____ to ______$

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