2. To build up central limit theorem by following steps: Step 1, to generate a uniform distribution x(I) between 0 and 1, and plot it

Step 2, by randomly adding any two x(I) to have another distribution and plot it,

Step 3, repeat the step 2 for two more times and plot these two distributions.

Step 4, Use normal distribution to fit the above 4 plots.

Notice: The solution for each answer should be the Matlab code, followed by the figures.

Answer which has no Matlab code will not get any credit.