In a Study of the Effectiveness of Diet on Weight

question 31

Essay

In a study of the effectiveness of diet on weight loss, 20 people were randomly selected to participate in a dietprogram for 30 days. Test the claim that diet had no bearing on weight loss. Use α = 0.02.. Assume that thedistribution is normally distributed. $$\begin{array}{l}\begin{array} { l | l | l | l | l | l | l | l | l | l | l | l | } \begin{array} { l } \text { Weight before Program } \\\text { (in pounds) }\end{array} & 178 & 210 & 156 & 188 & 193 & 225 & 190 & 165 & 168 & 200 \\\hline \begin{array} { l } \text { Weight after program } \\\text { (in pounds) }\end{array} & 182 & 205 & 156 & 190 & 183 & 220 & 195 & 155 & 165 & 200 \\\hline\end{array}\\\begin{array} { l | l | l | l | l | l | l | l | l | l | l | } \begin{array} { l } \text { Weight before Program } \\\text { (in pounds) Cont. }\end{array} & 186 & 172 & 166 & 184 & 225 & 145 & 208 & 214 & 148 & 174 \\\hline \begin{array} { l } \text { Weight after program } \\\text { (in pounds) Cont. }\end{array} & 180 & 173 & 165 & 186 & 240 & 138 & 203 & 203 & 142 & 174 \\\hline\end{array}\end{array}$$

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Definitions:

Big Five Traits

A model that describes personality based on five broad dimensions: openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism.

Interactional Psychology

A study of how individual differences interact with the environment and how this affects behavior.

Situation

The context or set of circumstances surrounding and affecting an event, decision, or action.

General Self-efficacy

A belief in one's ability to successfully accomplish tasks and manage situations.