Determine whether the following study is an observational study, an experiment, or a meta-analysis, and explain your choice. An eleven-year-old tested spiritual healers. Using a plastic partition, she held a hand above one of the healer's hands, and the healer was asked to identify the hand that was chosen. The same test was then given to non-healers. Choose the correct answer below. v .. The study is an experiment because there is a treatment group and a control group. . The study is a meta-analysis because an analysis of the data was used to determine effectiveness. .. The study is a meta-analysis because the study was done on a group. . The study is an experiment because a hypothesis is tested. -. The study is an observational study because all participants were observed only once and under the same conditions. The study is an observational study because it is a retrospective study using data from the past.
