Question

a nervous kicker usually makes 70% of his first field goal attempts. if he makes his first attemply, his success rate rises to 90%. what is the probablity that he makes his first kick and he makes the second kick?

Answer 1

0.63

Explanation:

given that a nervous kicker usually makes 70% of his first field goal attempts. if he makes his first attemply, his success rate rises to 90%.

We have to find the probablity that he makes his first kick and he makes the second kick

Probability of making first kick = 0.70

Since probability of making second kick provided he made first kick = 90%

Required probability = Prob he makes first kick and he makes the second kick

=P(AB) = P(A) P(B/A)= 0.70(0.90)

where A = he makes first kick

B = he makes second kick

= 0.63