2 When estimating the population mean why not construct a 99

2) When estimating the population mean, why not construct a 99% confidence interval every time?

Solution

Confidence intervals consist of a range of values (interval) that act as good estimates of the unknown population parameter; however, in infrequent cases, none of these values may cover the value of the parameter. The level of confidence of the confidence interval would indicate the probability that the confidence range captures this true population parameter given a distribution of samples. It does not describe any single sample.