Suppose we select, without looking, one marble from a bag containing 4 red marbles and 13 green marbles. What is the probability of selecting each of the following? a) A red marble b) A green marble c) A purple marble d) A red or a green marble a) What is the probability of picking a red marble? (Type an integer or a simplified fraction.) b) What is the probability of picking a green marble? (Type an integer or a simplified fraction.) c) What is the probability of picking a purple marble? (Type an integer or a simplified fraction.) d) What is the probability of picking a red or a green marble? (Type an integer or a simplified fraction.)