Lebron James had a 90% free throw percentage during his career. That is, on average, he made 9 of every 10 free throws.

(a) If you randomly select 4 free throws he made and record the number of successes in these 4 free throws, what is the probability that he made at least three of the four shots?

(b) If you randomly select 225 free throws he made and record the number of successes in these 225 free throws, what is the probability that he made at least 88% of the shots

(c) If you randomly select 225 free throws he made and record the number of successes in these 225 free throws, what is the probability that he made between 87% and 93% of the shots?