Confidence Intervals for the Proportion and the Mean
Move the slider to select a new problem.
Check the box to see the answer.
A problem like this will be on the final exam.
This applet is based on problems 17, 19, 21,
23, 25 on pages 338-40, and problems 10,
12, 13, 14, 15 on page 357 of Mario F. Triola,
"Elementary Statistics", 12th edition, Pearson
Education, Inc. 2014.
Updated July 3, 2012 and November 22, 2013.