Final answer:
To determine which events are equally likely when choosing marbles from two bags, probabilities should be calculated based on the number of marbles of each color in each bag.
Step-by-step explanation:
The question you've asked concerns the probability of selecting marbles from two different bags, given various scenarios where marbles are of different colors. From the references provided, we can deduce that Bag A contains four green, three red, and two yellow marbles, while a second bag's (Bag B) contents are referenced to have four blue and three white marbles. To answer your question, we would normally create a probability tree diagram for each bag and determine the likelihood of each event.
As an example, to compute the probability of event a) 'Choosing a red marble from Bag A and a red marble from Bag B,' we would need to know the number of red marbles in Bag B, but for the sake of explanation, let's assume also Bag B contains red marbles. If the number of red marbles in Bag B was equal to the number of blue marbles in Bag A, then events a) and d) 'Choosing a blue marble from Bag A and a blue marble from Bag B' would be equally likely. However, specific comparisons can't be made without knowing the exact contents of Bag B.