A researcher would like to know whether or not Freshman Orientation helped new Freshman better acclimate to college. As students pick up their new university t-shirt, at the close of orientation, she asks every tenth student to participate in a survey. What type of Sampling is this?
1) Random-Stratified Sampling because the researcher is selecting every 10th student in the t-shirt line
2) Non-Random Sampling because each student in the t-shirt line does not have an equal chance to be selected
3) Random Sampling because the researcher is selecting every 10th student in the t-shirt line
4) Random Sampling because each student, in the t-shirt line, has an equal chance of being selected