3. The weight X of a particular animal is normally distributed with u = 200 kg and o = 15 kg. An animal of this population is overweight if it has weight greater than 230 kg. (a) Find the probability that an animal is overweight. (b) We select 2 animals of this population. Find the probabilities that (i) both animals are overweight (ii) only one animal is overweight. (c) We select 7 animals of this population. Find the probability that exactly two of them are overweight