In seeking to debunk the "empty nest" myth, researchers hypothesized that marital satisfaction among women would increase after their children moved out. To test this hypothesis, they collected data on marital satisfaction from 61 women at two time points: 1 year before children moved out and 1 year after children moved out. They observed that the average marital satisfaction among women at time 1 was 6.2 and the average marital satisfaction among women at time 2 was 6.8. The sum of squares for the difference scores (SSD) was 210. Use the critical-value approach for a dependent samples t-test (where α = .01) to determine if there is a significant increase in marital satisfaction among women after children move out.
8. Identify the alternative hypothesis
a.) Marital satisfaction decreases among women after children move out
b.) Marital satisfaction increases among women after children move out
c.) There are no significant differences in marital satisfaction among women before and after children move out
d.) There are significant differences in marital satisfaction among women before and after children move out
9. List your degrees of freedom
10. List your estimated standard error
11. List your t test statistic (where: Time 2 - Time 1)
12. List your critical t value(s)
13. Is the increase in marital satisfaction among women following children moving out statistically significant? (Yes/No)
14. Calculate Cohen's d for the difference in marital satisfaction