John Took a Test That Required Him to Rank Order

Essay

John took a test that required him to rank order the importance of 15 items to help him survive in the desert.The following table shows his results along with the correct order.
$$\begin{array} { | c | c | c | } \hline \text { Item } & \text { Inhn's Order } & \text { Correct Order } \\\hline 1 & 1 & 4 \\\hline 2 & 11 & 9 \\\hline 3 & 5 & 3 \\\hline 4 & 12 & 15 \\\hline 5 & 6 & 12 \\\hline 6 & 10 & 5 \\\hline 7 & 3 & 1 \\\hline 8 & 15 & 10 \\\hline 9 & 8 & 14 \\\hline 10 & 9 & 7 \\\hline 11 & 14 & 11 \\\hline 12 & 4 & 2 \\\hline 13 & 13 & 13 \\\hline 14 & 2 & 6 \\\hline 15 & 7 & 8 \\\hline\end{array}$$ Calculate and interpret the Spearman coefficient of rank correlation and use the 0.01 level of significance in testing whether its true value could be something other than 0.