Review for Unit 8 Test (Probability)

• unlikely

• likely

• certain

• equally likely

Describe the likelihood of the event given its probability.

There is a 0% chance that the earth is the closest planet to the sun.

• unlikely

• certain

• likely

• impossible

• likely

• unlikely

• certain

• equally likely

You randomly choose one of the tiles shown. Find the number of ways the event can occur.

Choosing a number less than 5.

• 6

• 5

• 12

• 4

You randomly choose one of the tiles shown. Find the number of ways the event can occur.

Choosing a number prime number

• 3

• 2

• 8

• 4

• 5

There are 15 sixth graders, 10 seventh graders, and 16 eighth graders in a gym class. The gym teacher randomly selects one student to collect balls. In how many ways can choosing not a seventh grader occur?

• 10 ways

• 31 ways

• 26 ways

• 41 ways

A bucket contains 18 baseballs. Some are regular baseballs, and some are soft baseballs. Choosing a regular baseball and not choosing a regular baseball have the same number of favorable outcomes. How many soft baseballs are in the bucket?

• 0

• 8

• 9

• 18

You randomly choose one of the tiles shown. Find the probability the event can occur.

Choosing a number greater than 4

• 8

You randomly choose a marble from a jar. The jar contains 3 red marbles, 10 blue marbles, 8 green marbles, and 4 yellow marbles. Find the probability of choosing a blue marble.

The rules of a contest say that there is a 6% chance of winning a prize. Four hundred people enter the contest. Predict how many people will win a prize.

• 22

• 6

• 24

• 240