A Researcher Performed a Study to Determine Whether an Association

question 9

Multiple Choice

A researcher performed a study to determine whether an association exists between political party affiliation and income.She obtained the following sample data.Use a 1% level of significance. $\begin{array}{|l|r|r|r|r|}&&\text {income bracket}\\\hline party& \text { Low } & \text { Middle } & \text { High } & \text { Total } \\\hline \text { Conservative } & 101 & 130 & 97 & 328 \\\hline \text { NDP } & 78 & 113 & 146 & 337 \\\hline \text { Other } & 15 & 34 & 9 & 58 \\\hline \text { Total } & 194 & 277 & 252 & 723 \\\hline\end{array}$ $x ^ { 2 }$ = 27.831; P-value = 0.0000135

• A)Reject the null hypothesis.The data provide sufficient evidence to conclude that political party affiliation is distributed uniformly for each income bracket.
• B)Do not reject the null hypothesis.There is insufficient evidence to conclude that there is a relationship between income and political party affiliation.
• C)Reject the null hypothesis.The data provide sufficient evidence to conclude that there is a relationship between income and political party affiliation.
• D)Do not reject the null hypothesis.The data provide sufficient evidence to conclude that there is a relationship between income and political party affiliation.
• E)Reject the null hypothesis.There is insufficient evidence to conclude that there is a relationship between income and political party affiliation.

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Definitions:

W.E.B. Du Bois

An influential African-American sociologist, historian, and civil rights activist known for his leadership in the Niagara Movement and co-founding the NAACP.

Progressive

Relating to or advocating progress, change, or reform, especially in social or political matters.

Keating-Owen Child Labor Act

The Keating-Owen Child Labor Act of 1916 was the first federal law in the United States to restrict the employment of children, prohibiting the interstate commerce of goods produced by factories that employed children under certain ages.

Separate But Equal

A legal doctrine that justified and permitted racial segregation, claiming that services could be separate by race as long as they were equal in quality.