document.write( "Question 620125: Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the Binomial Probability Formula to find the probability of x successes given the probability p of successes on a single trial n=6, x=4, p=0.55, q=0.45 \n" ); document.write( "
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\n" ); document.write( "x = random variable = number of successful trials = 4
\n" ); document.write( "n = number of trials = 6
\n" ); document.write( "P = likelihood of success = 0.55
\n" ); document.write( "Q = likelihood of failure = 0.45
\n" ); document.write( "nCx = number of combinations of n objects taken x at a time
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\n" ); document.write( "Binomial Distribution
\n" ); document.write( "b(x; n, P) = nCx * P^x * Q^(n - x)
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\n" ); document.write( "b(4; 6, 0.55) = 6C4 * (0.55)^4 * (0.45)^2 = (15)(0.09150625)(0.2025) = 0.27795023
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