Question: A sample of 230 observations is selected from a normal population with a population standard deviation of 26. The sample mean is 18. a. Determine

A sample of 230 observations is selected from a normal population with a population standard deviation of 26. The sample mean is 18. a. Determine the standard error of the mean. (Round your answer to 3 decimal places.) Answer is complete and correct. Standard error of the mean 1.714 b. Determine the 99% confidence interval for the population mean. (Round your answers to 3 decimal places.) Confidence interval X Answer is complete but not entirely correct. 13.585 x and 22.415

A sample of 230 observations is selected from a normal population with a population standard deviation of 26 . The sample mean is 18 a. Determine the standard error of the mean. (Round your answer to 3 decimal places.) Answer is complete and correct. b. Determine the 99% confidence interval for the population mean. (Round your answers to 3 decimal places.) Answer is complete but not entirely correct

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