Matlab

1 Create a vector z with 1000 elements generated with the randn function. The generated values must have a mean value of 12 and a standard deviation of 1100x12.6. The use histogram function and the plot histogram of x, y and z in the same figure window.

2

Use the cumsum function and find the cumulative sum (also known as the prefix sum) of z and save it in the vector a. Create a new figure window and plot a in a "subplot".

3

Use the cumsum function and find the cumulative sum of z - 12 and store it in the vector b. Plot b in a "subplot" next to or below the previous one