X(t) is a random process with a constant mean value of 2 and the autocorrelation function R_x ($\tau$) = 4$\lfloor e^{-0.2 | d} + 1 \rfloor$.

Let X be the Gaussian random variable obtained by sampling the process at t = ti and let Q ($\alpha$) = $\int_\infty^\infty \dfrac{1}{\sqrt {2\pi}} e^{\dfrac{-y^2}{2}} dy$ The probability that [ x $\le$ 1 ] is