Rossman/Chance Applet Collection

Theory-Based Inference Applet

Notes: With Firefox on the Mac, you may need to click in the area of the applet to jump start the applet. Not currently working in IE on the Mac.
On Macs, if you specify the count rather than the sample proportion, press the Return key before using the Calculate button.

With one proportion test can select to use a continuity correction in finding the p-value (adjusts numerator of z by 1/(2n) towards hypothesized proportion)