7. Dr. Henry believes that if he gives couples a measure of relationship satisfa

Question

7. Dr. Henry believes that if he gives couples a measure of relationship satisfaction (0-8) before he provide them couples therapy and then the same measure of relationship satisfaction (0-8) after therapy his patients will be less likely to divorce. He give his 41 clients the satisfaction measure then therapy for one month and gives the same 41 clients the satisfaction measure after therapy.

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

            Independent:________________________            Scaling:_____________________________

            Dependent:__________________________            Scaling:_____________________________

B. What test should Dr. Henry use?

G. If Dr. Henry calculates a test statistic of 2.11, should he?          Retain H0                        Reject H0

Explanation / Answer

Solution:

A) Dependent variable ------- Scores obtained by couples in the measure of relationship satisfaction

Scale - Ratio

Independent varible ----------- Number of therapy session attended

Scale - Ratio

B) Dr. Henry should use a paired t test.

G) G. If Dr. Henry calculates a test statistic of 2.11, should he?   

Here, we have

Test statistic = t = 2.11

Critical value = -1.6839

Test statistic value > Critical value

According to decision rule, we

Retain H0   

Do not reject the null hypothesis

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