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Calculating Sample Size with Confidence Level and Standard Deviation

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We want to estimate the population mean within 5, with a 99 percent level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?

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Solution Summary

Solution includes a .doc file that shows how to calculate the necessary sample size to estimate the mean of a population at 99% confidence.

Solution provided by:
Manal Elkhoshkhany, MBA
Education
  • BA, Ain Shams University, Cairo Egypt
  • MBA, California State University, Sacramento
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