A health psychologist tests a new intervention to determine if it can change healthy behaviors among children. To conduct the test, the researcher gives one group of children an intervention, and a second group is given a control task without the intervention. The number of healthy behaviors observed in the children during a 5-minute observation are given in the table.

Test whether or not the number of healthy behaviors differ at a .05 level of significance. State the value of the test statistic and the decision to retain or reject the null hypothesis.

Compute effect size using eta-squared.

Intervention

Yes	No
7	5
4	6
7	5
7	6
7	5
6	5