Could someone please explain in details? What is variance of mean? I am confused with what the problem is asking

Use MATLAB or similar structured programming that produces random numbers to nd the variance of the sample mean of a Bernouili process that has: success rate p; the number of elements in each trial n; and the number of trials used to nd a variance of the mean m. Find the variance of the mean, variSn). for the eight cases resulting from varying the parameters thusly: p=[0.5. 0.9]. n : [5. 50], and m=['10, 100]. You can develop your own code, coilaborate with others. use others' code. whatever works. Please be sure to cite any sources/collaborations. Submit text input. or upload a text le showing: 1.) the eight varlSn) values resulting from your random value simulations. 2.) predicted variSn) values for comparison to the empirical values in 1.), 3.) the code used (for at least one of the eight cases), and 4.) citation of sources and collaborations