A psychologist wants to know whether wives and husbands who both serve in a foreign war have similar levels of satisfaction in their marriage. To test this, six married couples currently serving in a foreign war were asked how satisfied they are with their spouse on a 7-point scale ranging from 1 (not satisfied at all) to 7 (very satisfied). The following are the responses from husband and wife pairs.

Married Couples

Wife Husband

7 5

4 6

7 5

7 6

7 5

5 5

(a) Test whether or not mean ratings differ at a 0.05 level of significance. State the value of the test statistic. (Round your answer to three decimal places.)

State the decision to retain or reject the null hypothesis.

-Retain the null hypothesis.

-Reject the null hypothesis.

(b) Compute effect size using eta-squared. (Round your answer to two decimal places.)

You may need to use the appropriate table inAppendix Bto answer this question.