7th Math 4.2.2 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

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

• 2
• 6
• 12
• 24

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

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

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

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

• 1/4
• 1/8
• 1/2
• 1/6

• 1/8
• 1/2
• 1/24
• 1/16

An event that consists of two or more events

•  event
• dependent events
• experiment
• compound event

How do you find compound probability?

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