Exercise 2 Weather forecasters are building a model to predict the number of times Champaign County issues a winter weather advisory during the month of December. Suppose they find that the probability of k winter weather advisory follow the following probability model where P(0) = c, and the P(k) = 2 P[K = 3k k! when k = 1, 2, 3, ... a) (1 pt) Find the value of c that makes this a valid probability distribution. b) (1 pt) What is the probability that Champaign county will have 2 or more winter weather advisories during December