It is reasonable to model the number of winter storms in a season as with a poisson random variable. suppose that in a good year the average number of storms is 3, and that in a bad year the average is 5. if the probability that next year will be a good year is 0.1 and the probability that it will be bad is 0.9, find the expected value and variance in the number of storms that will occur. expected value =

variance =