5. Many cell phone service providers offer family plans whereinparents who subscribe can get discounts for other family members.Suppose that the number of cell phones per family is Poissondistributed with a mean of 1.5. If one family is randomly selected,calculate the following probabilities
a) Family has only 1 cell phone.
b) Family has 3 or more cell phones.
c) Family has 4 or fewer cell phones.
