Final answer:
To find the probability of selecting a red gumball and then a yellow gumball from the bag, we need to calculate the probability of each event and multiply them together.
Step-by-step explanation:
To find the probability of selecting a red gumball and then a yellow gumball from the bag, we need to calculate the probability of each event and multiply them together.
The probability of selecting a red gumball on the first draw is 6 red gumballs out of a total of 6+3+7+4=20 gumballs.
The probability of selecting a yellow gumball on the second draw, after replacing the first gumball, is 4 yellow gumballs out of a total of 20 gumballs.
Therefore, the probability of selecting a red gumball and then a yellow gumball is (6/20) * (4/20) = 24/400 = 0.06 or 6%.