- A random sample of size \(n = 8\) of paired data is taken from a population. The data are plotted below.
\includegraphics[max width=\textwidth, alt={}, center]{ba41c616-0805-4466-81b8-b985b0bdd94b-06_572_983_335_541}
Test, at the \(1 \%\) level of significance, whether or not there is evidence of a negative rank correlation between the two variables.
You should state your hypotheses and critical value and show your working clearly.