If P(EnF)=0.09, P(E|F) = 0.18, and P(F|E)=0.2, then (a) P(E)=
(b) P(F) =
(c) P(EUF) =
(d) Are the events E and F independent?
Enter yes
or no

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?