A grocery bag can be classified as either paper or plastic. Suppose that 33% of grocery bags are classied as plastic. [a] Two grocery bags are chosen at random. What is the probability that both grocery bags are plastic? [b] Nine grocery bags are chosen at random. What is the probability that all nine grocery bags are plastic? [1:] What is the probability that at least one of nine randomly selected grocery bags is paper? Would it be unusual that at least one of nine randomly selected grocery bags is paper? [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.)