Question

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

Explanation:

Step1: Find total students with <4h screen time

Students with less than 4 hours screen time: above 80 (9) + below 80 (9) = $9 + 9 = 18$

Step2: Calculate percentage of below 80

Percentage = $\frac{\text{Below 80}}{\text{Total}} \times 100 = \frac{9}{18} \times 100 = 50$

Answer:

50%