4. Probability

Complements

4. Probability

Complements

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Multiple Choice

When drawing a marble out of a bag of red, green, and yellow marbles 8 times, a red or yellow marble is drawn 6 times. What is the probability of drawing a green marble?

$0.025$

$0.125$

$0.25$

$0.75$

Verified step by step guidance

Step 1: Understand the problem. We are given that a red or yellow marble is drawn 6 times out of 8 draws. We need to find the probability of drawing a green marble.

Step 2: Calculate the number of times a green marble is drawn. Since a red or yellow marble is drawn 6 times, the remaining draws must be green. Therefore, the number of green marbles drawn is 8 - 6 = 2.

Step 3: Determine the probability of drawing a green marble. Probability is calculated as the number of successful outcomes divided by the total number of trials.

Step 4: Set up the probability formula. The probability of drawing a green marble is the number of times a green marble is drawn (2) divided by the total number of draws (8).

Step 5: Express the probability mathematically. The probability of drawing a green marble is $ \frac{2}{8} $. Simplify this fraction to find the final probability.

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Textbook Question

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Textbook Question

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Multiple Choice

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Textbook Question

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Textbook Question

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