confidence level and interval

One can calculate the 95% confidence interval for the mean with the population standard deviation known. This will give us an upper and a lower confidence limit. What happens if we decide to calculate the 99% confidence interval?

Your task for this discussion is as follows:

  1. Describe how the increase in the confidence level has changed the width of the confidence interval. Do the same for the confidence interval set at 80%.
  2. Include an example with actual numerical values for the intervals in your post to help with your explanations.

just a discussion post-no plagiarism!

 

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