A researcher is interested to see if depression is different in those who use Facebook compared to those who do not. She knows the average depression score on the Beck Depression inventory for the general population is = 17, = 6 She collects a sample of 50 Facebook users and determines their average depression score is 21 .

If she is conducting a two-tailed tested, (alpha) = .05, with critical values of +/- 1.96, and she calculates an observed test-statistic of 3.53, she can conclude ______________.

options

There is not enough information to answer this question.

Depression levels are higher among facebook users.

Depression levels are lower among facebook users.

Depression levels are the same as among facebook users, compared to the general population.