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[Solved] From a sample of 12 boys the mean bodyweight was found to be 115 pounds with a sample standard deviation of 8.1 pounds. Assuming the distribution

Question: From a sample of 12 boys the mean bodyweight was found to be 115 pounds with a sample standard deviation of 8.1 pounds. Assuming the distribution is approximately normal, answer the following questions and show all your work:

  1. Calculate a 95% confidence interval for the population mean \(\mu \).
  2. What is the margin of error of your confidence interval?
  3. How large a sample would be needed to reduce this margin of error to three?

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Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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