Discussion:
Q: A study was conducted in order to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated. One hundred eighty- eight nursing students and 64 tea factory workers were given questionnaires. The prevalence of premenstrual syndrome was 39% among the nursing students and 77% among the tea factory workers. How many people in each group have premenstrual syndrome? Arrange the data into a 2x2 table.