# SOLUTION: While shooting arrows, William Tell can hit an apple 9 out of 10 times. What is the probability that he will hit exactly 4 out of 7 times?

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: While shooting arrows, William Tell can hit an apple 9 out of 10 times. What is the probability that he will hit exactly 4 out of 7 times?      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Probability and statistics Solvers Lessons Answers archive Quiz In Depth

 Question 454590: While shooting arrows, William Tell can hit an apple 9 out of 10 times. What is the probability that he will hit exactly 4 out of 7 times?Answer by edjones(7569)   (Show Source): You can put this solution on YOUR website!p=.9, q=.1 (p+q)^7 expansion of a binomial. nCr=7C4=35 coefficient 35p^4q^3 =.02296 the probability that he will hit exactly 4 out of 7 times. . Ed