Math Solutions

(Step-by-Step) Reading Scores : A sample of the reading scores of 35 fifth-graders has a mean of 82. The standard deviation of the sample is 15. Find the

Question: Reading Scores : A sample of the reading scores of 35 fifth-graders has a mean of 82. The standard deviation of the sample is 15.

  1. Find the best point estimate of the mean.
  2. Find the 95% confidence interval of the mean reading scores of all the fifth-graders.
  3. Find the 99% confidence interval of the mean reading scores of all fifth graders.
  4. Which interval is larger? Why?

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