Perform the Indicated Sign Test $$\alpha = 0.02$$

question 10

Essay

Perform the indicated sign test. Be sure to do the following: Identify the claim mathematically and state the null and
alternative hypotheses. Determine the critical value and find the test statistic. Decide whether to reject or fail to reject
the null hypothesis and interpret the decision in the context of the original claim.
-In a study of the effectiveness of physical exercise in weight loss, 20 people were randomly selected to
participate in a program for 30 days. Use the sign test to test the claim that exercise has no effect on weight loss.
Use $$\alpha = 0.02$$ $$\begin{array} { l l l l l l l l l l l l } \hline \begin{array} { l } \text { Weight Before Program } \\\text { (in Pounds) }\end{array} & 178 & 210 & 156 & 188 & 193 & 225 & 190 & 165 & 168 & 200 \\\hline \begin{array} { l } \text { Weight After Program } \\\text { (in Pounds) }\end{array} & 182 & 205 & 156 & 190 & 183 & 220 & 195 & 155 & 165 & 200 \\\hline \\ \hline \begin{array} { l } \text { Weight Before Program } \\\text { (in Pounds) }\end{array} & 186 & 172 & 166 & 184 & 225 & 145 & 208 & 214 & 148 & 174 \\\hline \begin{array} { l } \text { Weight After Program } \\\text { (in Pounds) }\end{array} & 180 & 173 & 165 & 186 & 240 & 138 & 203 & 203 & 142 & 170 \\\hline\end{array}$$

---

Definitions:

Key Aspects

The most important or crucial elements or features of a subject or issue.

Sequences of Dependent Activities

A series of actions or steps where the completion of one is reliant on the completion of its predecessor, often used in project planning.

Project Management Tool

Software or systems used to plan, organize, and manage resources, tasks, and timelines in project development.

Interdependence of Activities

A situation in which actions or processes are mutually reliant on each other, meaning the outcome of one is affected by the execution of another.