The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution for x is as follows. (Give your answer exactly.) x 24 25 26 27 28 P(x) 0.4 0.2 0.2 0.1 0.1
(a) Find the probability that exactly 27 ships arrive.
(b) Find the probability that at least 26 ships arrive.
(c) Find the probability that at most 25 ships arrive.