Question

screen time

	above	below	total
4 - 8 hours	18	16	34
8 - 12 hours	12	14	26
more than 12 hours	10	12	22
total	47	49	96

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 tenth of a percent.
answer attempt 1 out of 2

Explanation:

Step1: Identify relevant values

The number of students who spend less than 4 hours a week on screens is 14, and the number of those with grade - average below 80 is 7.

Step2: Calculate the percentage

The percentage formula is $\frac{\text{Number of students with grade - average below 80}}{\text{Total number of students with less than 4 - hour screen time}}\times100\%$. So, $\frac{7}{14}\times100\% = 50.0\%$.

Answer:

50.0%