Exercise 5.4 You want to determine if chocolate enhances mood. Subjects will be recruited and randomly assigned to one of two groups: Those in the control group will eat their regular diet, and those in the experimental group will also eat their usual meals and have one piece of chocolate at breakfast, lunch, and dinner over the course of a week. At the end of the week, all subjects (in both groups) will complete the Acme Mood Scale (1 = extremely bad mood, 100 = extremely good mood). Data set: Ch 05 - Exercise 04A.sav Codebook Variable:group Definition:Chocolate dosage group assignment Type:Categorical (1 = No chocolate, 2 = Chocolate [1 per meal]) Variable:mood Definition:Score on Acme Mood Scale Type:Continuous (1 = extremely bad mood, 100 = extremely good mood)

Write the hypotheses