document.write( "Question 422384: If the random variable z is the standard normal score, is it true that P(-3 < z < 3) could easily be approximated without referring to a table? Why or why not? \n" ); document.write( "

Algebra.Com's Answer #294838 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "If the random variable z is the standard normal score, is it true that P(-3 < z < 3)
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document.write( "could easily be approximated without referring to a table? YES
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document.write( "Three SDs from the mean account for ~99.7% of the entire distribution
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document.write( "thus a probalility ~ .99\r
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