Homework: 4-2 Probabilities Question 10, Instructor- Addition Rule (Or) created question Eli has a jar full of marbles. In the jar there are 13 blue marbles, 10 red marbles and 8 purple marbles a. She selects a marble at random from the jar. What is the probability that it is a red marble? P(red) = (round your answer to 3 decimal places). She puts the marble back b. She selects a marble at random from the jar. What is the probability that it is a red or a purple marble? P(red or purple) = (round your answer to 3 decimal places)