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From a normal population, Dr. Çetin takes a sample of 235. The population standard deviation is...

From a normal population, Dr. Çetin takes a sample of 235. The population standard deviation is 24, and the sample mean is 17.

a.Determine the standard error of the mean. (Round your answer to 3 decimal places.)

Standard error of the mean: ……?

b. Determine the 95% confidence interval for the population mean. (In your calculations: round your z/t value to 2 decimals, but round all other values to 3 decimals. Round your final answer to 3 decimal places.)

Confidence interval ……? and ……?

Math   Statistics-And-Probability   
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