point(s) A grocery bag can be classified as either paper or plastic. Suppose that 86% of grocery bags are classified as plastic. (a) Two grocery bags are chosen at random. What is the probability that both grocery bags are plastic? The probability is (Round to four decimal places as needed.) (b) Six grocery bags are chosen at random. What is the probability that all six grocery bags are plastic? The probability is (Round to four decimal places as needed.)