Question: 1) The tab Data 3-1 contains data from a study in which adolescents were given counseling at the beginning of the school year to see

1) The tab "Data 3-1" contains data from a study in which adolescents were given counseling at the beginning of the school year to see if it had a positive impact on their tolerance for adolescents who were ethnically different from them. Assessments were made right before the intervention and then 6 months later. Did the program work? The outcome variable is scored on an attitude-toward-others test with possible scores ranging from 0 to 50 (the higher the score, the more tolerance). a) State your null and alternative hypothesis. b) What test would you use and why? c) Determine if the assumptions for t test are met. d) Undertake the test and interpret the results

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