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

normalized Gaussian random variable $N(0,1)($ 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.