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(See Steps) A sample has generated the following results: n = 81, X = 30, S = 1.38. Using the Z distribution, compute the 99% Confidence Interval about

Question: A sample has generated the following results: n = 81, X = 30, S = 1.38.

  1. Using the Z distribution, compute the 99% Confidence Interval about μ.
  2. At 99%, what sample size will generate a margin of error E = 0.15?
  3. Using the t distribution, compute the 99% Confidence Interval about μ.

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