Find the Critical Value Find the Rank Correlation Coefficient and Test the Claim of and That

Essay

Find the critical value. Assume that the test is two-tailed and that n denotes the number of pairs of data.
-Ten trucks were ranked according to their comfort levels and their prices. $$\begin{array} { c c c } \hline \text { Make } & \text { Comfort } & \text { Price } \\\hline \mathbf { A } & 1 & 6 \\\mathbf { B } & 6 & 2 \\\mathbf { C } & 2 & 3 \\\mathbf { D } & 8 & 1 \\\mathbf { E } & 4 & 4 \\\mathbf { F } & 7 & 8 \\\mathbf { G } & 9 & 10 \\\mathbf { H } & 1 \mathbf { 0 } & 9 \\\mathbf { I } & 3 & 5 \\\mathbf { J } & 5 & 7 \\\hline\end{array}$$ Find the rank correlation coefficient and test the claim of correlation between comfort and price. Use a
significance level of 0.05.