Use the Rank Correlation Coefficient to Test for a Correlation

question 66

Essay

Use the rank correlation coefficient to test for a correlation between the two variables._
Ten trucks were ranked according to their comfort levels and their prices. $$\begin{array} { c c c } \text { Make } & \text { Comfort } & \text { Price } \\\hline \text { A } & 1 & 6 \\\text { B } & 6 & 2 \\\text { C } & 2 & 3 \\\text { D } & 8 & 1 \\\text { E } & 4 & 4 \\\text { F } & 7 & 8 \\\text { G } & 9 & 10 \\\text { H } & 10 & 9 \\\text { I } & 3 & 5 \\\text { J } & 5 & 7\end{array}$$ Find the rank correlation coefficient and test the claim of correlation between comfort and
price. Use a significance level of 0.05.

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Definitions:

NAFTA

stands for the North American Free Trade Agreement, a treaty among the United States, Canada, and Mexico that eliminated most tariffs and barriers to trade and investment.

European Union

A political and economic union of 27 European countries that are located primarily in Europe, aiming to ensure the free movement of people, goods, services, and capital.

GDP

Short for Gross Domestic Product, it measures the total economic output of a country within a specific time frame.

IMF

The International Monetary Fund, a global organization that provides financial support and advice to countries facing economic difficulties.