TeX source:

P_{y}=P_{x} P_{e}-\left[1-\operatorname{pr}\left(\mathrm{LSL}_{y} \leq \beta_{0}+\beta_{1} x+\varepsilon \leq \mathrm{USL}_{y} \mid \mathrm{LSL}_{x} \leq x \leq \mathrm{USL}_{x}, \mathrm{LSL}_{e} \leq\right.\right. \left.\left.\leq \varepsilon \leq \mathrm{USL}_{e}\right)\right]