document.write( "Question 706813: If the probability that a certain tennis player will serve an ace is 1/4, what is the probability that he will serve exactly two aces out of four serves? (Assume that the four serves are independent. Round your answer to four decimal places.)
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #435391 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
If the probability that a certain tennis player will serve an ace is 1/4, what is the probability that he will serve exactly two aces out of four serves?
\n" ); document.write( "-----
\n" ); document.write( "Binomial Problem with n = 4 and p(ace) = 1/4
\n" ); document.write( "----
\n" ); document.write( "P(x = 2) = 4C2*(1/4)^2*(3/4)^2 = binompdf(4,1/4,2) = 0.2109
\n" ); document.write( "=======================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "=======================
\n" ); document.write( "
\n" );