Math Solutions

[See Steps] A sample of the math test scores of 45 fourth-graders has a mean of 80 with a standard deviation of 20. Find the 95% confidence interval of

Question: A sample of the math test scores of 45 fourth-graders has a mean of 80 with a standard deviation of 20.

  1. Find the 95% confidence interval of the mean math test scores of all fourth-graders.
  2. Find the 99% confidence interval of the mean math test scores of all fourth-graders.

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


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