In a study involving stress among college students a group o

In a study involving stress among college students, a group of seniors are asked to complete a stress survey. After a two-hour seminar on relaxation methods, they are asked to complete the stress survey again. The appropriate design for testing the significance of the difference between the means is

dependent samples t-test.

one-sample t-test.

z-test.

independent samples t-test.

Solution

In a study involving stress among college students, a group of seniors are asked to complete a stress survey. After a two-hour seminar on relaxation methods, they are asked to complete the stress survey again. The appropriate design for testing the significance of the difference between the means is

dependent samples t-test.

one-sample t-test.

z-test.

independent samples t-test.

dependent samples t-test OR paired sample t test is used because the same group is measured before and after training.