In a Study of the Effectiveness of Physical Exercise in Weight

question 78

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. $$\begin{array} { | l l l l l l l l l l l l l | } \hline \text { Before } & 162 & 190 & 188 & 152 & 148 & 127 & 195 & 164 & 175 & 156 & 180 & 136 \\\hline \text { After } & 157 & 194 & 179 & 149 & 135 & 130 & 183 & 168 & 168 & 148 & 170 & 138 \\\hline\end{array}$$ What would be the signed rank for the column with values of 175 and 168?

• A) 10
• B) 8.5
• C) 9
• D) 8

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Definitions:

Antisocial Personality Disorder

A mental health disorder characterized by a long-term pattern of manipulating, exploiting, or violating the rights of others.

Dependent Personality Disorder

A mental health condition characterized by a pervasive and excessive need to be taken care of, leading to submissive and clinging behavior and fears of separation.

Obsessive-Compulsive Personality Disorder

A personality disorder characterized by a preoccupation with orderliness, perfectionism, control, and rules, often at the expense of flexibility and efficiency.

Psychotherapy

A form of treatment for mental health problems that involves talking with a psychiatrist, psychologist, or other mental health provider.