Step 1 :Consider the following claim: \[ \begin{array}{l} H_{0}: \rho=0 \ H_{a}: \rho \neq 0 \end{array} \]
Step 2 :We are given that $\mathrm{n}=13$ and $r=0$
Step 3 :We are asked to compute $t \star=r \sqrt{\frac{n-2}{1-r^{2}}}$
Step 4 :Substitute the given values into the formula to calculate t: $t = 0 \sqrt{\frac{13-2}{1-0^{2}}}$
Step 5 :Simplify the expression to get the final answer: $t = 0.0$
Step 6 :The computed value of $t$ is \(\boxed{0.00}\)