Explain the following piece of code. Write the code in your computer and run it$.$ After running the code, explain what the code illustrate.

rm$($list$=$ls$())$

set.seed$(1)$

y $<-$ rnorm$(10000,2\mathrm{.}5,1)$

hist$($y$,$ freq $=$ FALSE, col $=$ "darkgray", ylim $=$ c$(0,0\mathrm{.}4),$ xlim $=$ c$(-2,6))$

curve$($dnorm$($x$,2\mathrm{.}5,1),$ col $=$"darkblue", n$=8129,$ lwd $=2,$ add $=$ TRUE$)$