If I ran the simulation 1000 times, the percent head will be very close to 50. Running 1000 trials of the simulation instead of only 20 would likely provide a more accurate representation of the true sampling distribution. With more trials, the histogram would likely exhibit smoother and more symmetrical characteristics, closely resembling the theoretical sampling model. Additionally, summary statistics such as mean and standard deviation would be more reliable estimators of the population parameters due to the larger sample size