In a Study of the Effectiveness of Physical Exercise in Weight

question 41

Essay

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 a significance level of 0.05 to test the claim that the exercise program has no effect on weight. $$\begin{array} { l l } \text { Before } & 162&190&188&152&148&127&195&164&175&156&180&136 \\\hline \text { After } & 157&194&179&149&135&130&183&168&168&148&170&138\end{array}$$

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Definitions:

Insight Therapy

A psychological treatment aimed at increasing a person’s awareness of underlying motives and defenses.

Relaxation Methods

Techniques designed to reduce tension and stress, promoting a state of calmness and tranquility.

Aversion Therapy

A behavioral treatment method that uses unpleasant stimuli to reduce or eliminate undesirable behaviors.

Classical Conditioning

A learning practice in which the consistent linkage of two stimuli results in a response that, initially generated by the second stimulus, is ultimately generated by the first stimulus.