document.write( "Question 609927: a basketball player makes 70% of the free throws he shoots. if he tries 13 throws what is the probability that he will make more than five throws? \n" ); document.write( "
Algebra.Com's Answer #384037 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! This problem involves binomial probabilities \n" ); document.write( "The binomial probability distribution is written as \n" ); document.write( "P(x) = C(n,x)*p^x*(1-p)^(n-x) where n = the number of trials, x = the number of successes, and p is the probability of success \n" ); document.write( "More than 5 throws means we need to compute the probability of 6 or more \n" ); document.write( "P(6 or more) = 1 - P(5 or less) \n" ); document.write( "P(5 or less) = P(5) + P(4) + ... P(0) \n" ); document.write( "P(5) = C(13,5)*0.7^5*0.3^8 = 0.0142 \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "Adding up all the probabilities and subtracting from 1, we get: \n" ); document.write( "P(6 or more) = 1 - 0.018 = 0.982 \n" ); document.write( " |