Samples used in research is located in the student dormitory of 400 people divided by the proportion of Taro Yamane 95% confidence level tolerances ± 5%
The sample used in this research is that students staying in the hostel of 400 people divided by the proportion of Taro Yamane. , the level of confidence 95% ± 5% tolerances
The sample used in the research is a student dormitory of 400 people, divided by สัดส่วนของ Taro Yamane confidence level 95% value tolerances The edge 5%