Description:
Richard Lowry of Vassar College has created this java script which calculates the areas under the curve of the normal distribution falling to the left of -z, to the right of +z, and between -z and +z. This page is very simple, but it still effectively provides the user with a good introduction to this method. The interactive nature allows the student to manipulate the data. This approach allows the student to see the inner workings of the test.
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