C) Find the probability that he will leave at least two presents under a tree' Round to 4 decimal places. D) Find the expected value and standard deviation of the number of presents that he will leave under each tree. Round to 3 decimal places. (You do not need to derive these results from scratch. Recall what was presented in the Lesson.) M Suppose the lifespan of polar bears follows the following probability distribution: 1 _ 1 m): e 15 forx>0 0. otherwise Question 3 Suppose the number of presents that Santa Claus leaves under Christmas trees is Poisson distributed, with a mean 0f5.2 presents per house. A) Find the probability that he leaves exactly six presents under a tree. Round to 4 decimal places. B) Find the probability that he will leave one or five presents under a tree. Round to 4 decimal places. C) Find the probability that he will leave at least two presents under a tree' Round to 4 decimal places