matlab question

i need to plot this in matlab

7. (20 points) A Gaussian probability density function is represented as: g(x) = Croize-(2-/202, where him is the average value of the stochas- tic variable x, and o is the standard devia- tion. Generate plots (on the same window) for the following values of the average and standard deviation: um -1.2,0.0, 2.3) and o (0.3, 1.0, 4.0). x should be a vector hold- ing the values from -10.0 to +10.0 in incre- ments of Ax = 0.2. Use different colors for the different lines