Review: Experimental Probability

Multiple Choice

Paul has 23 marbles in a bag, 4 of them are black. Paul picks a marble from the bag without looking.

What is the probability that Paul picks a black marble?

• $$\frac{4}{23}$$

• $$\frac{1}{23}$$

• $$\frac{2}{23}$$

• $$\frac{3}{23}$$

Multiple Choice

An eight-sided die is rolled 25 times. How many times should we expect to roll a 7? Round your answer to the nearest whole number.

• 3

• 4

• 7

Math Response

The following twelve-sided die is rolled.

a. What is the chance of rolling five or more?

Type answer here

Correct Answer: \frac{8}{12}

Deg^°

Rad

​Experimental probability

​In order to predict the future, we sometimes need to determine the probability by running experiments, or looking at data that has already been collected. This is called experimental probability, since we determine the probability of each outcome by looking at past events.

Multiple Choice

A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt, P(large and green)?

• 1/3

• 1/7

• 1/9

• 1/12

Multiple Choice

Find the probability of rolling a 7, P(7), on a single die.

• 1/6

• 7/6

• 0

• 7/7

Multiple Choice

Andrew picks one marble at a time from a box and replaces it. He repeats this process 25 times and records the results in the table. Based on the table, which color marble has an experimental probability of 1/5?

• Yellow

• Red

• Blue

• Green

Multiple Choice

Find the probability that the spinner lands on Bonus Card when spun.

• 0.44

• 0.22

• 0.14

• 0.17

Multiple Choice

What is the probability of spinning a 3 and drawing an A, P(3 and A)?

• 2/8

• 1/4

• 1/16

• 1/8

Multiple Choice

Find the experimental probability:

Roll dice: 1, 3, 3, 4, 4

P(1) =

• 3/5

• 1/6

• 2/5

• 1/5

Multiple Choice

The experimental probability that Jonah will catch a fly ball is equal to 7/8. About what percent of the time will Jonah catch a fly ball?

• 55%

• 66%

• 77%

• 88%

Multiple Choice

Ariana's Office Supply shop sells 2 types of notebooks. Each notebook is offered in red, blue, or yellow. If a notebook is selected at random, how many different possibilities are in the sample space?

• 4

• 6

• 8

• 16

Multiple Choice

Find the theoretical probability of NOT landing on yellow if you spin the spinner.

• 1/8

• 7/8

• 1

• 7

Multiple Choice

The spinner was spun 30 times and landed on blue 12 times. What was the experimental probability of the spinner landing on colors that were not blue?

• 2/5

• 3/5

• 4/5

• 1/5

Multiple Choice

A retail store served 773 customers in October, and there were 44 complaints during that month.

Determine, as a percentage, the experimental probability that a customer submits a complaint. Round your answer to the nearest whole percent.

• 6%

• 4%

• 7%

• 8%

Multiple Choice

An insurance company found that in the past year, of the 2 558 claims made, 1 493 of them were from drivers under the age of 25.

a. What is the experiment probability that a claim is filed by someone under the age of 25?

Round your answer to the nearest whole percent.

• 50%

• 58%

• 60%

• 68%

Multiple Choice

An insurance company found that in the past year, of the 2 558 claims made, 1 493 of them were from drivers under the age of 25.

b. What is the experiment probability that a claim is filed by someone 25 or older?

• 42%

• 44%

• 52%

• 54%