To find the percentage of students who own a bird based on the two samples, we first need to calculate the total number of students who own a bird across both samples and then divide that by the total number of students in both samples.
From the data provided:
- In Sample 1, 8 students own a bird.
- In Sample 2, 12 students own a bird.
Now calculate the total number of bird owners:
\[ \text{Total bird owners} = 8 + 12 = 20 \]
Next, calculate the total number of students in both samples:
\[ \text{Total students} = 100 + 100 = 200 \]
Now, to find the percentage of students who own a bird:
\[ \text{Percentage of bird owners} = \left(\frac{\text{Total bird owners}}{\text{Total students}}\right) \times 100 = \left(\frac{20}{200}\right) \times 100 = 10% \]
Therefore, the percentage of students who own a bird as a pet is 10%.