Let X~N(2,2) i.e.X is a Gaussian variable with mean=2 and variance=2. Let x>0.
Write P(X>= -x) in terms of the cdf ∅ of the standard Gaussian variable with a positive argument. In other words, your answer be in terms of ∅(g(x)) where g(x) is a function of x which takes only positive values for x>0.