I want to assess whether different types of movies increase viewers’ stress response. I recruit 24 individuals and randomly assign them into three groups: Frozen (a Disney kids movie), Nightmare on Elm Street (a horror movie), and Fast & Furious (an action movie). After each participant watches their assigned movie, I measure their heart rate. Test, at an alpha of 0.05, whether the type of movie affects heart rate. a. What is the null hypothesis? b. What is the alternative hypothesis? Data: Frozen DV: Heart Rate (BPM) Nightmare on Elm Street DV: Heart Rate (BPM) Fast & Furious DV: Heart Rate (BPM) 65 90 85 70 85 85 70 86 75 65 92 90 62 93 60 63 97 63 68 105 74 72 110 80

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