document.write( "Question 1163000: Given an approximately normal distribution what percentage of all values are within 3 standard deviation from the mean ?
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Algebra.Com's Answer #786946 by Theo(13342) $\"\"$ $\"About$

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critical z = plus or minus 3.
\n" ); document.write( "area to the left of -3 is equal to .0013499672
\n" ); document.write( "area to the right of 3 is the same as the area to the left of -3.
\n" ); document.write( "1 - 2 * .0013499672 = .9973000656.
\n" ); document.write( "that's the proportion of the area under the normal distribution curve that's between z = -3 and z = 3.
\n" ); document.write( "multiply that by 100 to get 99.73000656%
\n" ); document.write( "this is what it looks like when using the calculator found at https://homepage.divms.uiowa.edu/~mbognar/applets/normal.html
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\n" ); document.write( "i'll be available to answer any questions you have regarding this.\r
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