The Table Below Shows the Weights of Seven Subjects Before

question 26

Essay

The table below shows the weights of seven subjects before and after following a particular diet for two months. $$\begin{array} { c | c c c c c c c } \hline \text { Subject } & \text { A } & \text { B } & \text { C } & \text { D } & \text { E } & \text { F } & \text { G } \\\hline \text { Befare } & 176 & 160 & 180 & 187 & 172 & 172 & 159 \\\hline \text { After } & 169 & 151 & 178 & 192 & 158 & 174 & 147 \\\hline \text { B-A } & 7 & 9 & 2 & - 5 & 14 & - 2 & 12 \\\hline\end{array}$$ Do the data suggest that the diet is effective in reducing weight? Perform a Wilcoxon signed rank test at the 5% significance level.

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Definitions:

Niche Media

Channels that are focused and generally used to reach narrow segments, often with unique demographic characteristics or interests.

Mass Media

Diverse media technologies that reach a large audience via mass communication, including broadcasting, publishing, and the internet.

Direct Mail

A marketing strategy that involves sending promotional materials or products directly to potential customers through the mail.

Fast Food

Quick-service restaurants that serve fast, convenient food which is typically high in calories and prepared in bulk ahead of time.