Finally I managed to fix the part of my code that was not letting me plot histograms for my monte carlo simulation on the data set for the ages of black and whites from the washington post shooting data.
So finally having run the code I can tell with more confidence that the difference in means for the age groups was not just by chance as we had seen in the T tests, but we went one strp further to make it more concrete using the monte carlo simulation.
From the above graph we can clearly tell that over a large number of randomized simulations on our data using resampling and finding the difference in means for the two groups, we still find that the average age of black people in the data is roughy 7 years younger than that of the white people.
Thus after having combined the results of pair wise T tests, T tests, Tukey Methods, Difference in Covariances, Monte Carlo Simulations, we can say that the observed differences in the mean ages of the black people as compared to white people who were shot is not occuring by chance.