# Bivarnormcdf

Bivarnormcdf-func

## Definition:

computes the lower tail probability for the bivariate Normal distribution.

For the two random variables (X, Y ) following a bivariate Normal distribution with

E[X]=0, E[Y]=0, E[]=1 ,E[]=1 and E[XY]=

## Parameters:

- x (intput, double)
- the first argument for which the bivariate Normal distribution function is to be evaluated, x.
- y (input, double)
- the second argument for which the bivariate Normal distribution function is to be evaluated, y.
- rho (input,double)
- the correlation coefficent, .
- prob (output,double)
- the probability.