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A sample of 235 observations is selected from a normal population with a population standard deviation of 24 . The sample mean is 17 .

A sample of 235 observations is selected from a normal population with a population standard deviation of 24 . The sample mean is 17 . (Use t Distribution Table \& z Distribution Table.) Required: a. Determine the standard error of the mean. (Round your answer to 3 decimal places.) c. Determine the 95% confidence interval for the population mean. (Round your answers to 3 decimal places.)

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