Probability Unit Review

What is the probability of selecting an even number from (1-16)

• 7/16

• 2/16

• 1/2

• 1/8

Twelve students have an equally likely chance of being selected in a drawing at school. Eight are girls and four are boys. What is the probability that a boy will be selected?

• 1/3

• 4/8

• 1/4

• 1/2

A number cube is rolled. What is the likelihood that a number less than or equal to three is rolled?

• 3/6

• 2/5

• 1/3

• 1/2

Marty can go to one movie on either Friday or Saturday. His choice of movies includes a comedy or horror movie. Which list shows a all of the possible outcomes?

• Comedy Friday,

  Comedy Saturday,

  Horror Friday,

  Horror Saturday

• Comedy Horror

  Comedy Friday

  Comedy Saturday

  Horror Comedy

  Horror Friday

  Horror Saturday

• Comedy Friday

  Comedy Saturday

• Comedy Friday

  Horror Friday

A number cube is rolled and coin is flipped. Create a tree diagram or organized list to determine how many possible outcomes.

• 6

• 18

• 24

• 12

In a game, the player wins if he rolls a 2 on a number cube. If the number cube is rolled 24 times, what is a reasonable prediction for the number of unsuccessful rolls.

• 20

• 4

• 12

• 18

Which of the following has a certain likelihood of occuring?

• The soccer player will make a goal at the next game.

• A number cube will land on a number less than 7.

• There is a 60% chance of rain tomorrow.

• Mrs. Kiefer will wear orange to support Clemson.

Two coins are flipped. What is the probability that both the coins land on tails?

• 1/4

• 1/2

• 1/8

• 1/16

At the WMS basketball game, 7 out of the first 20 students was wearing spirit wear. Based on this information, if 280 students attended the game, then how many students could be expected to be wearing spirit wear?

• 120

• 98

• 168

• 58

There are 7 marbles in a bag. Three are green and 4 are yellow. You draw a marble, replace it, and then draw another. What is the probability of choosing two green marbles?

• 1/7

• 16/49

• 9/49

• 3/13