document.write( "Question 587983: find the mean, variance and standard deviation of the binomial distributions
\n" ); document.write( "when n= 129 p = 0.21
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Algebra.Com's Answer #374326 by stanbon(75887)\"\" \"About 
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find the mean, variance and standard deviation of the binomial distributions
\n" ); document.write( "when n= 129 p = 0.21
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\n" ); document.write( "mean = np = 129*0.21
\n" ); document.write( "variance = npq = 129*0.21*0.79
\n" ); document.write( "std = sqrt(npq)= sqrt[129*0.21*0.79]
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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