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Tanya performed an experiment in which she randomly pulled a marble from a bag, recorded its color, put it back, and then repeated. The following table represents the number of times each color of marble was pulled.



Color of Marble
Frequency
Green

25

Blue

35

Purple

40



What is the experimental probability of pulling a green marble?

Responses
2/5

1/4

1/25

7/20

1 answer

To find the experimental probability of pulling a green marble, we can use the formula for probability:

\[ P(\text{Green}) = \frac{\text{Number of Green Marbles}}{\text{Total Number of Marbles}} \]

From the data provided:

  • Number of green marbles = 25
  • Number of blue marbles = 35
  • Number of purple marbles = 40

First, we need to calculate the total number of marbles pulled:

\[ \text{Total} = 25 + 35 + 40 = 100 \]

Now, we can substitute the values into the probability formula:

\[ P(\text{Green}) = \frac{25}{100} = \frac{1}{4} \]

Thus, the experimental probability of pulling a green marble is \( \frac{1}{4} \).

The correct response is:

1/4