Computing areas under the Normal Curve with the TI-83

It's BUILT IN! Press [2nd][DISTR] and select item 2, "normalcdf(".

(The area from 0 to 2 is .477... or 47.72%)

You can even specify the average and standard deviation of the curve, i.e.
(The area under a normal curve centered at 50 with SD 5, from 44.5 to 55.5 is about 72.87%)

Last Modified May 5, 1999.
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