Inferring With 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

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

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

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

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

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%

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%

Michael is planting a garden. The probability that a seed will produce a plant is 9/10. Which best describes the likelihood that a seed will produce a plant?

• Very Unlikely

• Unlikely

• Equally Likely

• Likely

• Very Likely

A bag contains 80 colored tokens. Of all the tokens in the​ bag, 25 are black and 5/16 are red. What is the probability of choosing a black token?

• .0625

• .3125

• .625

• .375

A bag contains 80 colored tokens. Of all the tokens in the​ bag, 25 are black and 5/16 are red. What is the probability of choosing a black token compared to that of choosing a Red?

• Equally likely

• Black is more likely

• Red is more likely