Math Solutions

[See Solution] A random sample of 25 observations was taken from a normally distributed population. The average in the sample was 84.6 with a variance of 400.

Question: A random sample of 25 observations was taken from a normally distributed population. The average in the sample was 84.6 with a variance of 400.

  1. Construct a 90% confidence interval for \(\mu \).
  2. Construct a 99% confidence interval for \(\mu \).
  3. Discuss why the 90% and 99% confidence intervals are different.
  4. What would you expect to happen to the confidence interval in part A if the sample size was increased?

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


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