Let X and Y represent concentration and viscosity of a chemical product. Suppose X and Y have a bivariate normal distribution with sX = 4, sY = 1, µX = 2, and µY = 1. Draw a rough contour plot of the...

Let X and Y represent concentration and viscosity of a chemical product. Suppose X and Y have a bivariate normal distribution with sX = 4, sY = 1, µX = 2, and µY = 1. Draw a rough contour plot of the joint probability density function for each of the following values for p:

(a) p = 0


(b) p = 0.8

(c) p = - 0.8