The Center for the Study of Violence wants to determine
The Center for the Study of Violence wants to determine whether a conflict-resolution program in a particular high school alters aggressive behavior among its students. For 10 students, aggression was measured both before and after they participated in the conflict solution course. Their scores were the following (higher scores indicate greater
aggressiveness):

Test the null hypothesis that aggression does no differ as a result of participation in the
conflict-resolution program. What do your results indicate?
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