8.4 Basic Probability

What is probability?

• A number between zero and one
• The chance or the likelihood of an event happening
• The favorable outcomes divided by all the possible outcomes.
• All of the choices are true.

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CCSS.7.SP.C.5

What is the probability of picking a red marble from the bag?

• 4/10
• 1/10
• 3/10

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

What is the probability of picking a purple marble from the bag?

• 3/10
• 1/10
• 0
• 1

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CCSS.7.SP.C.7B

What is the probability of spinning the spinner and landing on 7

• 6/8
• 1/8
• 7/8
• 8/8

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CCSS.7.SP.C.5

There are 52 cards in a standard deck of playing cards (1/2 Black & 1/2 Red). What is the probability of drawing a black 5 from a standard deck of playing cards?

• 1/2
• 4/52
• 1/13
• 1/26

What is the probability of NOT spinning green on this spinner?

• 1/4
• 3/4
• 1/12
• 5/12

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

What is the probability of getting any letter that is not A?

• 6/8
• 3/4
• 2/8
• 1/4

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a "M"?

• 8/121
• 4/11
• 2/11
• 4/121

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CCSS.7.SP.C.5

CCSS.7.SP.C.7

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

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CCSS.7.SP.C.5

Find the P(red) marble.

• 9/11
• 9/20
• 11/9
• 20/9

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CCSS.7.SP.C.5

CCSS.7.SP.C.7