Decide, at the Given Significance Level, Whether the Data Provide

Essay

Decide, at the given significance level, whether the data provide sufficient evidence to conclude that x is useful forpredicting y.
-Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is a useful predictor of y. $$\begin{array} { r | r r r r l } \mathrm { x } & 2 & 4 & 5 & 6 \\ \hline \mathrm { y } & 7 & 11 & 13 & 20 \end{array} \quad \hat { y } = 3 \mathrm { x }$$