9. One out of every three Americans believes that the US government should take \"primary responsibility\" for eliminating poverty in the United States. If 30 Americans are selected, fmd the probability that a) Exactly eight (8) will believe that the US government should take \"primary responsibility\" for eliminating poverty. (10 points) b) At least eight (8) will believe that the US government should take \"primary responsibility\" for eliminating poverty. (5 points, calculation is not necessary)