Did I Get This – Sampling Distribution of p-hat
The proportion of left-handed people in the general population is about 0.10. To simulate this population, we constructed a collection in which p = 0.10. We then conducted four simulations, drawing random samples of different sizes from this collection. Here you see the resulting sampling distributions and corresponding summary tables:
http://phhp-faculty-cantrell.sites.medinfo.ufl.edu/files/2012/12/DIG_09005_148.swf
Hint
This document is linked from Sampling Distributions.