Which conclusions can be drawn from the results of the survey? Check all that apply.
There is no association between using social media and grade level.
The probability a student uses social media, given that he or she is in 9th grade, is 81%.
A student who is more likely to not use social media is in 8th grade.
An 8th grader is more likely to use social media than not.
Knowing a student’s grade level does not help determine if he or she uses social media.