A health psychologist tests a new intervention to determine ifit can change healthy behaviors among siblings. To conduct the thistest using a matched-pairs design, the researcher gives one siblingan intervention, and the other sibling is given a control taskwithout the intervention. The number of healthy behaviors observedin the siblings during a 5-minute observation were then recorded.Intervention Yes 6, 2, 5,6,6,5 No 4,5,4,5,4,4
(a) Test whether or not the number of healthy behaviors differat a 0.05 level of significance. State the value of the teststatistic. (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 totwo decimal places.)
