Research Question : to study the effectiveness of parents’ guidance on healthy diet by comparing the BMI improvement of students who receive parents’ education on the healthy diet vs the existing students who receive normal education on the healthy diet.
H 0 : (Null Hypothesis) Mean of BMI of the students under parent’s guidance on healthy diet is the same as the mean of BMI of the students under normal education on healthy diet.
H a : (Alternate Hypothesis) Mean of BMI of the students under parent’s guidance on healthy diet will be different from the mean of BMI of the students under normal education on healthy diet.
Parents of the experimental group receive a DVD on how to provide guidance of healthy diet to teenage children.
Parents show the DVD clippings to their children everyday for 15 minutes before dinner for two months. There should be 60 clippings of videos in total (Treatment X 1 ).
For the second (control) group, the students will just receive the normal education on healthy diet at school (Treatment X 2 ).
After two months, perform a post-test ( O ), and compare the measurement of BMI of the two group of students.
The mean score of the pretest and posttest of the science project will be measured. With the help of statistical software, the p value of T test will be calculated
H 0 (null hypothesis) will be rejected if the p <0.05 in level of significance
Research Methods Knowledge Base ( http:// www.socialresearchmethods.net/kb/stat_t.php )
Gay, L. R., Mills, G. E., & Airasian, P. (2006). Educational Research: Competencies for Analysis and Applications. Upper Saddle River, N.J. : Pearson/Merrill Prentice Hall
Cohen, L., Mansion, L., & Morrison, K. (2000). Research methods in education. London. RoutledgeFalmer
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