2) The below data comes from the number of hours per week spent on social media for the in-class randomized controlled trial we conducted. Statistic Treatment Group Control Group Sample Size (Y) 27.7 25.3 Sample Size (n) 29 26 Sample Variance 915.2 106.1 a) Use the data above to calculate the standard error for the difference between two means SE (Y'-Y2) Where the treatment group mean is Y' And the control group mean is Y b) Use a t-statistic to test whether the mean hours on social media for the treatment and control groups are statistically different from each other.

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