Free Throw Freddie is an 80% free throw shooter. At the end of practice he shoots until he makes 10 shots.
a) What is the probability that Freddie makes 10 in a row (without a miss, since he stops once 10 shots have been made)?
b) What is the probability that Freddie needs 15 or more attempts?
c) Free Throw Frank is only a 70% free throw shooter. He also takes shots until he makes 10. What is the probability that he needs 15 or more attempts?