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
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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.
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document.write( "P(X=5)
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Algebra.Com's Answer #484258 by DrBeeee(684)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |