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\begin{aligned}&R_{j}=\operatorname{Pr} \cdot\left[L_{j} \geq 0\right]=\operatorname{Pr} \cdot\left[\frac{L_{j}-E\left(L_{j}\right)}{\sqrt{\operatorname{var}\left(L_{j}\right)}} \geq-\frac{E\left(L_{j}\right)}{\sqrt{\operatorname{var}\left(L_{j}\right)}}\right] \\&=1-\Phi\left(-\frac{E\left(L_{j}\right)}{\sqrt{\operatorname{var}\left(L_{j}\right)}}\right),\end{aligned}