To find the percentage of students who own a bird as a pet based on the two samples, we first need to determine the total number of students who own a bird across both samples.
From the table:
- Sample 1: 8 students own a bird
- Sample 2: 12 students own a bird
Now, we calculate the total number of students who own a bird:
Total number of students who own a bird = 8 (Sample 1) + 12 (Sample 2) = 20
Next, we add the total number of students from both samples:
Total number of students = 100 (Sample 1) + 100 (Sample 2) = 200
Finally, we calculate the percentage of students who own a bird as follows:
\[ \text{Percentage of students owning a bird} = \left( \frac{\text{Total number of bird owners}}{\text{Total number of students}} \right) \times 100 \]
\[ \text{Percentage} = \left( \frac{20}{200} \right) \times 100 = 10% \]
Therefore, the percentage of students who own a bird as a pet is 10%.