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 a
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.

List the elements of the set in roster notation. (enter empty or ∅ for the empty set.) {x | x is a letter in the word hippopotamus}

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false