R Studio Coding GGPlots

5 Random Numbers and Histograms (Applied] Let I = I1 + ... + 120, the sum of 20 independent Uniform(0,1) random variables. In R, create 1,000 simulations of x and plot their histogram. On the histogram, overlay a graph of the normal density function with the same mean as .z. Comment on any differences between the histogram and the curve. Hint 1: To plot a histogram in R you can build on the following code: library(ggplot2) df