Sample group.The population used in this study is that undergraduate students who have status as a 4-year course as a student (academic year 2558 (2015)-2557 (2014)) to select a random sample method by using the Krejcie table and Morgan because there is limited time to ease research data collection. Researchers then used, for example, the number of 120 people received completed questionnaires and analyzed. All 120 100 percent original.
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