Statistics For The Behavioral And Social Sciences
posted by Dee Sanders .
A researcher conducts a t test for dependent menas in which it is predicted that there will be a decrease in unemployment from before to after a particular job-skills training program. The cutoff "t" needed is -1.8333. The standard deviation of the distribution of menas of change scores is 2.0 and the mean change score for the sample studied is an increase of 5.2. What is the effect size?