Unit 3 Review

There are three colors of marbles in a bag:
green, red, and blue.

The probability of getting a green marble is
5/12.
The probability of getting a red marble is 1/4.

What is the probability of getting a blue marble?

• 1/3

• 5/8

• 3/8

• 2/3

There are apples, bananas, and pears in a basket. The probability of randomly picking an apple is 1/10. The probability of randomly picking a banana is 2/5. What is the probability of randomly picking a pear?

• 1/2

• 2/5

• 7/10

There are four colors of pencils in a large box. John will randomly select a pencil from the box. The table below shows the probability of selecting each color.

What color will John most likely select?

• Red

• Green

• Blue

• Yellow

Lewis will spin the spinner below one time.

What is the likelihood that Lewis will spin a number greater than 6?

• unlikely

• impossible

• certain

• likely

Jason will spin the spinner below 300 times.

About how many times should Jason spin a 3 or 5?

• 150

• 50

• 75

• 200

The probability of winning a game is 1 : 12. If Chloe plays the game 60 times, how many times could she expect to win?

• 5

• 8

• 12

Erin rolled a number cube with sides labeled 1 through 6. She rolled the number cube 400 times and recorded each result. About how many times could Erin expect to roll a 4?

• 70

• 100

• 130

Jill flipped a coin 40 times. The coin landed as heads 28 times and tails 12 times. Based on her results, which of the following is true?

• The experimental probability of the coin landing

  as heads was 7 to 10

• If she flips the coin 20 more times, it will land

  as heads 14 times.

• The theoretical probability of a coin landing as

  heads is greater than her results.

• The next time she flips the coin it will land as

  heads

Natalia is a girl in a math class with a total of 11 girls and 9 boys. If the teacher selects one student at random to go to the board, what is the probability that Natalia will be selected?

• 5%

• 9%

• 11%

• 55%

Bill has a bag that contains 7 Florida state quarters, 3 Alabama state quarters, and 5 Georgia state quarters. He will randomly select one quarter. What is the probability that Bill will select a Florida state quarter?

• 7/15

• 7/8

• 1/7

• 1/15