Likelihood and Probability

The spinner shown is spun once

P(1, 5, or 7)

• 1/8

• 3/8

• 4/8

• 2/8

The spinner shown is spun once. P(multiple of 3)

• 1/2

• 1/4

• 3/8

• 5/8

Probability is ...

• the chance that some event will occur.

• a game that involves coins.

• a guarantee.

Probability can be written as ...

• a fraction

• a decimal

• a percent

• all of the above

A likely chance event is closer to what number?

• 0

• 1

• .5

• 100

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

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%

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

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