Question

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?

Answer 1

Answer:7/20

Step-by-step explanation:there’s 7 blue marbles and she did It for 20 times

Answer 2

Answer:
`=(7)/(20)`

Explanation:

Given : The number of times blue marble drawn from the bag =7

The total number of trials = 20

Then , the experimental probability of choosing a blue marble from a bag is given by :-

`\text{P(Blue)}=\frac{\text{Number of times blue marble appeared}}{\text{Total trials}}\\\\\Rightarrow\ \text{P(Blue)}=(7)/(20)`

Hence, the experimental probability of choosing a blue marble from a bag =
`=(7)/(20)`