In a Study of the Effectiveness of Physical Exercise in Weight

question 67

Multiple Choice

In a study of the effectiveness of physical exercise in weight reduction, 12 subjects followed a program of physical exercise for two months. Their weights (in pounds) before and after this
Program are shown in the table. Use Wilcoxon's signed -ranks test and a significance level of
0) 05 to test the claim that the exercise program has no effect on weight. $$\begin{array} { l l l l l l l l l l l l l } \text { Before } & 162 & 190 & 188 & 152 & 148 & 127 & 195 & 164 & 175 & 156 & 180 & 136 \\\hline \text { After } & 157 & 194 & 179 & 149 & 135 & 130 & 183 & 168 & 168 & 148 & 170 & 138\end{array}$$ What would be the signed rank for the column with values of 175 and 168?

• A) 8
• B) 9
• C) 10
• D) 8.5

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Definitions:

Academic Standards

The set criteria or benchmarks for academic performance and achievement within educational institutions.

Cerebral Asymmetry

The functional differentiation between the left and right hemispheres of the brain, often relating to differences in abilities, such as language in the left hemisphere and spatial processing in the right.

Hemispheric Activity

The level of brain function or operation in either the right or left hemisphere, often associated with specific cognitive processes.

Hemispheric Activity

The functioning or activity level of the brain's two hemispheres, often discussed in terms of differences in cognitive processing or emotional response.