Answer to Question #238233 in Statistics and Probability for Math war

Question

Suppose you decided to switch from 95% to 99% confidence interval estimate for the mean. The interval will-

a) Decrease

b) Increase

c) Stay the same

d) Cannot tell

Answer 1

Answer: b) Increase

A 99 percent confidence interval is wider than a 95 percent confidence interval because to be more confident that the true population value falls within the interval we will need to allow more potential values within the interval.