Compound Probability

Ricardo has the spinner pictured here and a bag of marbles filled with 2 red marbles, 3 green marbles, and 3 blue marbles. What is the probability that Ricardo spins red on the spinner and picks a red marble out of the bag?

• 1 ⁄ 16
• 1 ⁄ 2
• 1 ⁄ 4
• 1 ⁄ 8

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How many outcomes are there with tossing a coin and rolling a dice?

• 2
• 6
• 12
• 24

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What is the probability of picking a blue marble, putting it back in the bag, then picking a red marble?

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If you spin two times, what is the probability of landing on green both times?

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If you pick a red marble and keep it, how does that change the probability of getting a green marble when you pick a second time?

• No change

• More likely

• Less likely

• Impossible

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A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? 

• 1/12
• 1/4
• 1/8
• 1/2

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• 1/4
• 1/8
• 1/2
• 1/6

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• 1/8
• 1/2
• 1/24
• 1/16

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An event that consists of two or more events

•  event
• dependent events
• experiment
• compound event

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How do you find compound probability?

• Multiply your probabilities
• Add your probabilities
• Divide your probabilities
• Subtract your probabilities

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