# A researcher wants to know if people who do community service have higher levels of empathy than…

Homework 1. A researcher wants to know if people who do community service have higher levels of empathy than people who do no community service (CS). Participants are divided into three groups: 10+ hours of CS (n = 14), 1-10 hours of CS (n = 12), and no CS (n = 10). Each participant completes a measure of empathy in which scores can range from 0-100. 1. What are the researcher’s independent and dependent variables? a. Independent: b. Dependent: 2. What are the null and alternative hypotheses (use the appropriate symbols not words)? a. H0: b. H1: 3. What is the appropriate test for the researcher to use? 4. Why is that statistic appropriate? 2. A research team has developed a new medication to treat ADHD. They think that their new medicine will be more effective than the current medication. The team asks local doctors to do a study in which newly diagnosed children with ADHD (n = 20) are matched with other children taking the current medication (n= 20) based on symptoms and physical attributes of the children. The research team will then test all the children after one year to determine the effectiveness of the treatments with a standardized symptom score-sheet (scores can range from 1-50). 1. What are the researcher’s independent and dependent variables? a. Independent: b. Dependent: 2. What are the null and alternative hypotheses (use the appropriate symbols not words)? a. H0: b. H1: 3. What is the appropriate test for the researcher to use? 4. Why is that statistic appropriate?

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