Suppose a new study conducted by researchers at a university found that meditation can help reduce stress and anxiety levels in college students. The study involved a group of students who participated in a weekly meditation program for a semester, and their stress levels were compared to those of a control group. The results showed a significant decrease in stress and anxiety among the students who practiced meditation regularly.
Can we infer that "All students in the study were psychology majors"? Yes, no, or maybe?