Suppose one NBA player can get one point in each free shot with probability 0.8. Now he has five times of free shots and it is reasonable to assume that the result in each shot has no impact on other...

Suppose one NBA player can get one point in each free shot with probability 0.8. Now he has five times of free shots and it is reasonable to assume that the result in each shot has no impact on other shots.

(b) What is the probability of his getting 3 points?
(c) What is the probability of his getting at least 2 points?
(d) we define an unusual event if the chance of the event is below 5%. Is it an unusual event that he lost all his shots?

please explain each step fully