A research wants to examine the effects of a new form of therapy on anxiety.She randomly places 120 subjects into one of three groups: those who receive the new therapy, those who receive traditional therapy, and those who receive no therapy.

Questions:

1. What are her hypotheses?

2. What is the indepdent variable and dependent variable?

3. Is her Independent Variable categorical or continuous?

4. What type of statistical test (i.e., the specific type of t-test or ANOVA) would she use to compare the classes?

5. Is this an experiment or observational study?