Compound Probability

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What is compound probability?

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Compound probability is the probability of two or more events happening at the same time. It can be calculated using the multiplication rule for independent events.

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How do you calculate the probability of two independent events occurring together?

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To find the probability of two independent events A and B occurring together, multiply their individual probabilities: P(A and B) = P(A) × P(B).

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CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

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If a spinner has 6 equal sections, what is the probability of landing on any one specific section?

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CCSS.7.SP.C.7A

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What is the probability of spinning red on a spinner with 2 red, 3 green, and 1 blue section?

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CCSS.7.SP.C.7B

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What is the total number of outcomes when tossing a coin and rolling a die?

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The total number of outcomes is 12 (2 outcomes for the coin × 6 outcomes for the die).

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What is the probability of getting tails on a coin and a 3 on a die?

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How does picking a red marble first affect the probability of picking a green marble second?

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It makes it less likely because there are fewer total marbles left.

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CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.5

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What is the formula for calculating the probability of an event?

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The formula is P(Event) = Number of favorable outcomes / Total number of outcomes.

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CCSS.7.SP.C.7A

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What is an independent event in probability?

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An independent event is an event whose outcome does not affect the outcome of another event.

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CCSS.HSS.CP.A.5