Likelihood and Probability

Suppose you have a bag of colored plastic disks and you choose one without looking. The probability the disk you choose is yellow is ​P(yellow​)=5/25. What is the probability as a decimal?

• .25

• .20

• .15

• .30

Tags

CCSS.7.SP.C.5

Suppose you have a bag of colored plastic disks and you choose one without looking. The probability the disk you choose is yellow is ​P(yellow​)=5/25. What best describes the​ probability?

• Impossible

• Unlikely

• Equally Likely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Suppose you have a bag of colored plastic disks and you choose one without looking. The probability the disk you choose is yellow is ​P(yellow​)=5/25. How many plastic disks were in the bag?

• 5

• 25

• 30

• Unknown

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.C.5

Sandra spins the pointer of a spinner. The spinner has four equal sections labeled 1 to 4. What is the probability that the pointer will land on a number less than 5?

• Impossible

• Unlikely

• Equally Likely

• Likely

• Certain

Tags

CCSS.7.SP.C.5

Sandra spins the pointer of a spinner. The spinner has four equal sections labeled 1 to 4. What is the probability that the pointer will land on a number less than 3?

• 25%

• 20%

• 50%

• 75%

Tags

CCSS.7.SP.C.5

Michael is planting a garden. The probability that a seed will produce a plant is 9/10. What is this probability as a percent?

• 47%

• 10%

• 90%

• 53%

Tags

CCSS.7.NS.A.2

CCSS.7.NS.A.3

CCSS.7.SP.C.5

Is the spinner shown a fair​ spinner? Explain why or why not.

• The spinner is a fair spinner because the sections are the same size. The likelihood of spinning each number is the same.

• The spinner is not a fair spinner because the sections are not the same size. The likelihood of spinning a​ 2, 3,​ 4, 6,​ 7, or an 8 is greater than the likelihood of spinning a 1 or a 5.

• The spinner is a fair spinner because the sections are not the same size. The likelihood of spinning each number is not the same.

• The spinner is not a fair spinner because the sections are not the same size. The likelihood of spinning a 1 or a 5 is greater than the likelihood of spinning a​ 2, 3,​ 4, 6,​ 7, or an 8.

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Angela is using a number cube for a game with faces labeled​ 1, 2,​ 3, 4,​ 5, and 6. Is the number cube​ fair?

• Yes because all numbers have an equal chance of being rolled.

• Yes because all numbers do not have an equal chance of being rolled.

• No because all numbers have an equal chance of being rolled.

• No because all numbers do not have an equal chance of being rolled.

Tags

CCSS.7.SP.C.5

Bag 1 contains 25 colored tiles. Of all the tiles in this​ bag, 10 are blue. Suppose Bag 2 contains 250 colored tiles, 75 of which are blue. Which bag are you less likely to draw a blue tile?

• Equally likely

• Bag 1

• Bag 2

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.C.5

CCSS.7.SP.C.6

CCSS.7.SP.C.7

If an event can occur with a probability of 21/23, then we can say that it ...

• will always occurr

• cannot occur

• is less likely to occur

• is likely to occur

Tags

CCSS.7.SP.C.5