This function computes the Q function by integrating the Normal distribution.
It takes one paramter and calculates the right tail probablity.
x would have the value of .5
For an arbitrary Gaussian distribution with mean, mu, and variance, sigma^2, then the function is passed this form.
Ex. Say you have a distribution of G(3,4). mu = 3, and sigma = 2. You want to calculate the right tail probability that it will be greater than 3.5. The function call would look like
This is not the most efficient way of calculating this. I wrote this because I didn't have the proper toolbox. If you have the toolbox its just QFunc.