Part$-$B: Use the MATLAB instruction randn $(N,1)$ which generates $N$ values of a

nomalized Gaussion random variable mean $\{$:$=0,{}_x^2=1),$ to generate

$100$ points

$2000$ points

and then plot the histogram and the PDF of the exact normalized Gaussian random

variable on the same graph for each case. Compare and comment on the results.