A researcher is evaluating whether a new intervention affectsthe average reported anxiety symptoms in a sample of 49 collegestudents. A survey from the previous semester found that thepopulation reported a mean anxiety score of 22 with a standarddeviation of 7. The sample completes the same measure of anxiety,with an average score of 20. The researcher sets their alpha levelat .05 and performs a two-tailed test to determine whether anxietyincreases or decreases after the intervention. Calculate effectsize using Cohen’s d. Show all of your calculations for fullcredit.
