Question

Bibliotherapy is a common tool to use with children who have a hard time bonding with a therapist and opening up during therapy sessions. Dr. Contos wants to examine if children who participate in bibliotherapy (M=16.48, SD=2.67) score lower on levels of anxiety (0-25) than children who participate in play therapy (M=18.11, SD=2.58). She interviews 25 children in each group for a total of 50 children.

1. What are the independent and dependent variables and how are each scaled (1 pt each; Total 4 pts)?

            Independent:________________________            Scaling:_____________________________

            Dependent:__________________________            Scaling:_____________________________

2. What test should Dr. Contos use and why.

3. What are the null and alternative hypotheses for that test

4. What are that tests assumptions

Answer 1

1)

Independent = children who participate in bibliotherapy

dependent = anxiety scores

2)

Independent t test as there are two different groups

3) Null: children who participate in bibliotherapy score higher on levels of anxiety (0-25) than children who participate in play therapy

Alt: children who participate in bibliotherapy score lower on levels of anxiety (0-25) than children who participate in play therapy

4) Data is normal

• Normality: the dependent variable must follow a normal distribution in the population. ...
• Homogeneity: the standard deviation of our dependent variable must be equal in both populations