Let's think about when you would prefer to use the confidence interval to represent the mean for a set of data rather than the sample mean.Instead we use a confidence interval and decide upon our level of confidence we wish to use (how much error we are willing to accept).The most commonly used level of confidence is 95% (also known as .05 significance).

For this posting, explain why we would use either a higher level of confidence, say 99%, or a lower level of confidence, say 90%.What happens to the distance between the upper and lower limits when you use a different level of confidence.Why?