Ch 9 D5 HW

Draw a tree diagram for choosing a vowel​ (a, e,​ i, o,​ u) and then a number (1 or 2).

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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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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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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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Probability of:

Spinning a 3

Drawing an A

• 2/8

• 1/4

• 1/16

• 1/8

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Probability of:
Spinning a 1
Drawing an A

• 1/4
• 3/8
• 4/12
• 3/32

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The two spinners above are spun. What is the probability of getting a perfect square (1,4,9,16), then the letter Z? 

• 3/20
• 9/20
• 1/8
• 11/40

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To find the probability of 2 or more events, you have to ________ the probability of each event.

• multiply

• divide

• add

• subtract

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