# Discussion Question

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Question description

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? 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%. Include an example with actual numerical values for the intervals in your post to help with your explanations.

mickeygabz
School: Duke University

See attached

Confidence Intervals
A confidence interval gives an upper and lower limit within which we would expect a population
parameter to lie in at the specified confidence level. A confidence interval for the mean thus
gives an upper and lower limit with which we would expect the population mean to lie in
For example: If a sa...

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