Math 7 - Ch. 11 Pre-Test

Determine whether the event is impossible, unlikely, as likely as not, likely, or certain.

Rolling a number greater than 5 with a number cube.

• impossible

• unlikely

• as likely as not

• likely

• certain

Determine whether the event is impossible, unlikely, as likely as not, likely, or certain.

Drawing a blue marble from a bag of black and white marbles.

• as likely as not

• impossible

• certain

• likely

• unlikely

Determine whether the event is impossible, unlikely, as likely as not, likely, or certain.

Flipping a coin and getting tails.

• impossible

• certain

• equally as likely as not

• likely

• unlikely

A bag contains 8 purple beads, 2 blue beads, and 2 pink beads. The probability of randomly picking a pink bead is 1/6. What is the probability of not drawing a pink bead?

• 1/6

• 10/2

• 2/10

• 5/6

During archery practice, Teri hits the target 14 out of 20 tries. What is the experimental probability that she will hit the target on her next try? Write your answer as a fraction, as a decimal, and as a percent.

• 14/20, .14, 14%

• 7/10, .7, 7%

• 7/10, .7, 70%

• 14/20, .7, 7%

Students have checked out 55 books from the library. Of these, 32 books are fiction.

What is the experimental probability that the next book check out will be nonfiction?

• 23/55

• 32/55

• 55/55

• 1/55

Enrique tosses a coin and spins the spinner. How many outcomes are in the sample space?

• 2

• 4

• 6

• none of these

An ice cream stand offers cake cones, waffle cones, or cups to hold ice cream. You can get vanilla, chocolate, strawberry, pistachio, or coffee flavored ice cream. If you order a single scoop, how many outcomes would you have in the sample space?

• 15

• 8

• 12

• 5

Find the probability of the event. Write your answer as a decimal.

Randomly drawing a heart or a club from a shuffled deck of 52 cards with 13-card suits: diamonds, hearts, clubs, and spades.

• 0.5

• 0.25

• 13/52

• 0.125

Stan has 6 girls and 8 boys in his karate class. He randomly selects one student to demonstrate a self-defense technique.

Find the probability of selecting a boy.

• 8/6

• 6/8

• 3/4

• 4/7