To find the approximate probability of a moth being black, we first determine the total number of moths in the population:
Total moths = Number of brown moths + Number of yellow moths + Number of black moths
Total moths = 47 + 15 + 34 = 96
Next, we calculate the probability of a moth being black by dividing the number of black moths by the total number of moths:
Probability of being black = Number of black moths / Total number of moths
Probability of being black = 34 / 96
Now, let's calculate that:
34 / 96 ≈ 0.3542
To express this as a percentage, we multiply by 100:
0.3542 × 100 ≈ 35.42%
Rounding this gives approximately 35%.
Thus, the correct response is:
35%