# Confidence Interval

**Author: Rice Virtual Lab in Statistics**

This applet simulates sampling from a population with a mean of 50 and a standard deviation of 10. For each sample, the 95% and 99% confidence intervals on the mean are computed based on the sample mean and sample standard deviation. The intervals for the various samples are displayed by horizontal lines. Part of the *Rice Virtual Lab in Statistics* suite, this applet includes instructions for use, concept explanation, exercises, and a limited use *JAVA* applet to illustrate how Type I error impacts statistical inferencing.