Final answer:
The probability of drawing a red marble and a yellow marble are the same, making them equally likely.
Step-by-step explanation:
Theoretical probability is a way to calculate the likelihood of an event happening based on the assumption that all outcomes are equally likely. In this case, we have the theoretical probabilities for different colors of marbles.
To determine which color is more likely to be drawn, we can compare the probabilities numerically. The probability of drawing a red marble is 0.2, while the probability of drawing a yellow marble is also 0.2.
Therefore, the probability of drawing a red marble and the probability of drawing a yellow marble are the same, making them equally likely.