document.write( "Question 803276: I have figured out how to find the probability when given P, but the q is now confusing me. I have tried a few different ways and I have three formulas in front of me. Very confused-please help! I am also able to see that the answer is \" 0.0818\" with no clue how they got to that point.\r
\n" ); document.write( "\n" ); document.write( "Assume that a procedure yields a binomial distribution with a trial repeated n=13 times. Find the probability of x=5 successes given the probability q=0.42 of failure on a single trial.
\n" ); document.write( "P(X=5)
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Algebra.Com's Answer #484258 by DrBeeee(684)\"\" \"About 
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Use the binomial probability formula,
\n" ); document.write( "(1) P(x=5) = (n!/(n-x)!/x!)*(p^x)*(q^(n-x))
\n" ); document.write( "where
\n" ); document.write( "q = 0.42
\n" ); document.write( "p = 1 - q = 0.58
\n" ); document.write( "n = 13
\n" ); document.write( "x = 5
\n" ); document.write( "Place the varible values into (1) and get
\n" ); document.write( "(2) P(x=5) = (13!/8!/5!)*(0.58^5)*(0.42^8) or
\n" ); document.write( "(3) P(x=5) = 1287*(0.58^5)*(0.42^8) or
\n" ); document.write( "(40 P(x=5) = 0.0818
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