document.write( "Question 1104705: Z is a standard normal variable. Compute the requested probability when
\n" ); document.write( " P(-.87 ≤Z≤ 2.21)
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Algebra.Com's Answer #719401 by Boreal(15235)\"\" \"About 
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This can be done from a table or a calculator.
\n" ); document.write( "From the calculator use 2nd VARS 2 and (-0.87,2.21)
\n" ); document.write( "probability is 0.7943.
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