Marnie conducted an experiment using a bag of 12 marbles containing an equal number of blue, red, and green marbles. She randomly chose one marble, noted the color, and returned the marble to the bag. Marnie did this for a total of 20 trials. The table below shows the results.

Event

Count

Blue

7

Red

8

Green

5

What was the experimental probability of choosing a blue marble from a bag?

Question

Mathematics

Gavyn Ellison

5 December, 10:15

Marnie conducted an experiment using a bag of 12 marbles containing an equal number of blue, red, and green marbles. She randomly chose one marble, noted the color, and returned the marble to the bag. Marnie did this for a total of 20 trials. The table below shows the results.

Event

Count

Blue

7

Red

8

Green

5

What was the experimental probability of choosing a blue marble from a bag?

+3

Answers (2)

Know the Answer?

Malakai Petty · Answer 1

7/20 chance, since she had 20 trials and pulled out 7 blue marbles.

Darien Richard · Answer 2

The answer would be 7/20. Because when it said you did that a total of 20 times. And then you would just put how many times you pulled a blue over it.