End of Unit Quiz: Probability

The probability of an event always falls between what two numbers?

• 5 and 50

• 7 and 12

• 0 and 1

• 100 and 200

A bag contains 4 red marbles, 5 blue marbles, 8 green marbles, and 2 yellow marbles. If you draw one marble at random, which color are you most likely to choose?

• red

• blue

• green

• yellow

Probability can be written as

• a fraction

• a decimal

• a percent

• all of the above

On a number cube, what is the probability of rolling 3 or more?

• 1/2

• 1/3

• 2/3

• 3/4

What is the probability of spinning red?

• 5/7

• 5/10

• 7/12

• 5/12

What is the probability of rolling a 7 on a number cube?

• 1/6

• 7/6

• 5/6

• 0

A bag contains 5 quarters, 4 dimes, 8 nickels, and 3 pennies. If you pick one coin at random, what is the probability of choosing a quarter?

• 1/2

• 1/4

• 3/20

• 3/5

The forecast says the probability for rain is 70%. What is the probability it will not rain?

• 70%

• 15%

• 80%

• 30%

Theoretical probability is

• What should happen

• What will happen

• What actually happened

• What I want to happen

Experimental probability is

• What should happen

• What will happen

• What actually happened

• What I want to happen