There is a bag of 50 marbles.

Andre takes out a marble, records its color, and puts it back in. In 4 trials, he gets a green marble 1 time.
Jada takes out a marble, records its color, and puts it back in. In 12 trials, she gets a green marble 5 times.
Noah takes out a marble, records its color, and puts it back in. In 9 trials, he gets a green marble 3 times.
1. Which is the best estimate of the probability of getting a green marble from this bag?

Probability is the chance of happening an incident or event. A probability is calculated by the ratio of the possible outcomes to total number of outcomes.

Andre gets 1 green marble out of 4 trials.

For Andre, the probability of getting 1 green marble is 1/4.

Jada gets 5 green marbles out of 12 trials.

For Jada, the probability of getting 1 green marble is 5/12.

Noah gets 3 green marbles out of 9 trials.

For Noah, the probability of getting 1 green marble is 3/9.

Hence, the best estimate of the probability of getting a green marble from this bag = (1/4 + 5/12 + 3/9)/3 = [(9 + 15 + 12)/36]/3 = 1/3.

Learn more about probability here: brainly.com/question/13091679

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