Question

kai randomly surveys eighth graders at his school and learns that 7 of 35 respondents own a video gaming system. based on these data, how many of the 150 eighth-grade students in kais school would be expected to own a video gaming system?

15 students
25 students
30 students
50 students

Explanation:

Calculate the sample proportion

$$ p = \frac{7}{35} = \frac{1}{5} = 0.2 $$

Apply proportion to the total population

$$ \text{Expected students} = 150 \times \frac{1}{5} = 30 $$

Answer:

• 15 students
• 25 students
• 30 students (Correct answer)
• 50 students