This applet investigates the trade-off between confidence and precision when constructing confidence intervals.
How to use the applet
- Type a sample size and level into the applet. Note, these cells act like a spreadsheet application; to change an entry, click on it, delete the current value, type a new one, and then press enter. The applet generates 100 confidence intervals and plots them along with the true mean. Confidence intervals that cover the true mean are colored blue; those that don't are colored red. The applet also states how many of the confidence intervals cover the true mean.
- Click the Regenerate button to generate new confidence intervals with the same sample size and level.
The applet