document.write( "Question 456914: what percentage of the area of the standard normal distribution is between z = -2.00 and z = +2.00? How do you know this? \n" ); document.write( "

Algebra.Com's Answer #313532 by robertb(5830) $\"\"$ $\"About$

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95%. This is based on the empirical, or 68-95-99.7, rule for normal distributions. \n" ); document.write( "

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