Step by Step Solutions

[Step-by-Step] Suppose a sample of size 36 is randomly drawn from a normal population with unknown mean µ X and known variance equal to 1.21. Find a 98

Question: Suppose a sample of size 36 is randomly drawn from a normal population with unknown mean µ X and known variance equal to 1.21.

  1. Find a 98 percent confidence interval for µ X if the sample mean is 18.
  2. How would you change your answer to part (a) if the variance were unknown and the sample variance is 1.44?

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


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