An experiment sought to discover if a course on nutrition would influence the Body Mass Index (BMI) of the students enrolled. Measures of body fat percentages were taken before the yearlong course and then again at the end of the course for each of the 10 students. The data are as follows: Student: 1 2 3 4 5 6 7 8 9 10 Before: 16.85 18.62 35.79 22.66 18.74 22.25 19.95 14.61 27.49 20.00 End: 16.42 18.53 36.01 22.53 18.59 22.03 19.25 14.06 26.11 19.42 Test the hypothesis at the 0.05 level of significance that the mean body fat percentages of the students decreased by the end of the course.
An experiment sought to discover if a course on nutrition would influence the Body Mass Index (BMI) of the students enrolled. Measures of body fat percentages were taken before the yearlong course and then again at the end of the course for each of the 10 students. The data are as follows:
Student: 1 2 3 4 5 6 7 8 9 10
Before: 16.85 18.62 35.79 22.66 18.74 22.25 19.95 14.61 27.49 20.00
End: 16.42 18.53 36.01 22.53 18.59 22.03 19.25 14.06 26.11 19.42
Test the hypothesis at the 0.05 level of significance that the mean body fat percentages of the students decreased by the end of the course.
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