A study was conducted to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated. A group of 188 nursing stu- dents and 64 tea factory workers were given questionnaires. The preva- lence 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 in a 2 x 2 table.