# Confidence Interval for a Population Mean

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This Demonstration illustrates the interpretation of a 95% confidence for a population mean. Assume that the population is described by a normal distribution with a known population standard deviation of . Also assume that the population mean is . The confidence interval is based on a sample size of .

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Contributed by: Peyton Cook (August 2022)

Open content licensed under CC BY-NC-SA

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References

[1] J. Devore, *Probability and Statistics for Engineering and the Sciences*, 9th ed., Boston: Cengage Learning, 2016.

[2] W. Navidi, *Principles of Statistics for Engineers and Scientists*, Dubuque, IA: McGraw-Hill, 2010.

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