Question

question
a random sample of students were surveyed as to how much non - school screen time they had each w
purposes of the survey, screen time was defined as: time spent online, on social media, watching tv,
playing video games) and if their grade average was above or below 80.
what percent of the students who spend more than 12 hours a week on screens reported a grade ave
above 80? round your answer to the nearest tenth of a percent.
answer attempt 2 out of 4

Explanation:

Step1: Find total students with >12h screen time

To find the total number of students who spend more than 12 hours a week on screens, we add the number of students with grade average above 80 and below 80 in the "more than 12 hours" category. So, \(15 + 16 = 31\).

Step2: Calculate the percentage

The number of students with grade average above 80 and more than 12 hours of screen time is 15. The percentage is calculated as \(\frac{15}{31} \times 100\%\). Let's compute that: \(\frac{15}{31} \approx 0.48387\), then multiply by 100 to get the percentage: \(0.48387\times100 \approx 48.4\%\) (rounded to the nearest tenth of a percent).

Answer:

\(48.4\%\)