As part of a large,ongoing diet study,some subjects of the study are taking part in an intensive exercise program for four weeks.Several variables are measured on these subjects,both at the beginning and at the end of the four-week period.Some of these variables are weight,cholesterol,and triglyceride level.One objective of this particular study is to assess the effect of diet and intense exercise on increasing triglyceride levels.The data for a simple random sample of nine of these subjects are given in the table below. The data are to be analyzed using the Wilcoxon signed rank test.The data were entered into SPSS,and the following output was obtained. Wilcoxon Signed Rank Test The objective of this study is to assess if diet and intense exercise increase triglyceride levels.According to the SPSS output,what is the value of the appropriate P-value for this test?
A)0.043
B)0.086
C)0.172
D)None of the above

Question

As part of a large,ongoing diet study,some subjects of the study are taking part in an intensive exercise program for four weeks.Several variables are measured on these subjects,both at the beginning and at the end of the four-week period.Some of these variables are weight,cholesterol,and triglyceride level.One objective of this particular study is to assess the effect of diet and intense exercise on increasing triglyceride levels.The data for a simple random sample of nine of these subjects are given in the table below.  The data are to be analyzed using the Wilcoxon signed rank test.The data were entered into SPSS,and the following output was obtained. Wilcoxon Signed Rank Test   The objective of this study is to assess if diet and intense exercise increase triglyceride levels.According to the SPSS output,what is the value of the appropriate P-value for this test?
A)0.043 
B)0.086 
C)0.172 
D)None of the above

Quizplus · Accepted Answer

The Wilcoxon signed rank test output shows a two-tailed P-value of 0.043, which is less than the typical significance level of 0.05. Therefore, we can reject the null hypothesis that diet and intense exercise have no effect on increasing triglyceride levels, and conclude that there is evidence of a significant increase in triglyceride levels after four weeks of diet and intense exercise.

As Part of a Large,ongoing Diet Study,some Subjects of the Study