Question: Computer-mediated communication study. Refer to the Journal of Computer-Mediated Communication (Apr. 2004 ) study to compare relational intimacy in people in- teracting via CMC to people meeting FTF, Exercise $7.18$ (p. 396). Recall that a relational intimacy score was meas- ured (on a 7-point scale) for each participant after each of three different meeting sessions. The rescarchers also hypothesized that the mean relational intimacy score for participants in the CMC group will significantly increase between the first and third meetings, but the difference between the first and third meetings will not significantly change for participants in the FTF group.

1. For the CMC group comparison, give the null and alternative hypotheses of interest.
2. The rescarchers made the comparison, part a, using a paired \(t\) -test. Explain why the data should be analyzed as matched pairs.
3. For the CMC group comparison, the reported test sta- tistic was \(t=3.04\) with \(p\) -value \(=.003 .\) Interpret these results. Is the researchers' hypothesis supported?
4. For the FTP group comparison, give the null and alternative hypotheses of interest.
5. For the FTF group comparison, the reported test statistic was \(t=.39\) with \(p\) -value \(=.70 .\) Interpret these results. Is the researchers' hypothesis supoorted?

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