document.write( "Question 243224: We have a binomial experiment with p=.3 and n=2.
\n" ); document.write( "1)Set up the probability distribution by showing all x values and their associated probabilities.
\n" ); document.write( "2)Compute the mean, variance, and standard deviation.
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Algebra.Com's Answer #178219 by stanbon(75887)\"\" \"About 
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We have a binomial experiment with p=.3 and n=2.
\n" ); document.write( "1)Set up the probability distribution by showing all x values and their associated probabilities.
\n" ); document.write( "x::::P(x)
\n" ); document.write( "0::::2C0(0.3)^0(0.7)^2 = 0.7^2 = 0.49
\n" ); document.write( "1::::2C1(0.3)^1(0.7)^1 = 2*0.21= 0.42
\n" ); document.write( "2::::2C2(0.3)^2(0.7)^0 = 0.3^2 = 0.09
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\n" ); document.write( "2)Compute the mean, variance, and standard deviation.
\n" ); document.write( "mean = np = 2*0.3 = 0.6
\n" ); document.write( "variance = npq = 0.6*0.7 = 0.42
\n" ); document.write( "std = sqrt(npq) = sqrt(0.42) = 0.6481
\n" ); document.write( "====================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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