Probability Test Review

A bag contains circular chips that are the same size and weight. There are 8 purple, 4 pink, 8 white, and 2 blue chips in the bag. The probability of drawing a pink chip is 2/11. What is the probability of not drawing a pink chip?

• 4/22

• 9/11

• 14/22

• 3/5

What is an outcome in probability?

• An activity based on chance

• Each repetition of an experiment

• A possible result of a probability experiment

• A number from 0 to 1 that describes how likely an event is to occur

During basketball practice Martha made 9 out of 15 free throws. What is the experimental probability that she will make her next attempt.

• 45%

• 75%

• 90%

• 60%

Andy has 30 marbles in a bag. 17 are blue. The rest are red. What is the probability of drawing a red marble?

• 50%

• 43%

• 28%

• 13%

Jaclyn is a soccer goalie. If she has 21 out of 25 saves in practice, what is the experimental probability that she will have a save on the next shot on goal?

• 88%

• 84%

• 80%

• 82.5%

What is the probability of rolling a 3 or a 4 on a die?

• 1 out of 6

• 2 out of 3

• 3 out of 6

• 1 out of 3

Lawrence reaches first base 40 out of 100 times. What is the probability of Lawrence reaching first base?

• 40%

• 4%

• 80%

• 8%

Sam reaches 1st base 80% of the time. Out of 350 times at bat, how many times can Sam expect to reach first base?

• 100

• 80

• 200

• 280

If you roll a number cube 12 times, about how many times do you expect to roll a number less than five?

• 4/6

• 2/3

• 4/9

• 1/3

How many different outfits can be made when choosing between three shirts, four pairs of shorts and two pairs of shoes?

• 20

• 18

• 12

• 24