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Statistics - Confidence Interval

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The following observations are the ages of a random sample of 8 men in a bar. It is known that the ages are normally distributed with a standard deviation of 10. Determine the 95% confidence interval estimate of the population mean. Interpret the interval estimate.

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Solution Summary

The expert examines confidence intervals and normal distributions for statistics observations. Neat, step-wise solution is provided.

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s = 10, n = 8

Standard Error, SE = s/sqrt n = 10/sqrt 8 = 3.5355

Mean of the sample of 8 men = x-bar = sum ...

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