%% 
%%  A DANTE-Edition example
%% 
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{415.41023pt}
\setlength\parindent{0pt}

\usepackage{pstricks,pst-func}

\begin{document}
\psset{yunit=10}\begin{pspicture*}(-6,-0.07)(6.1,0.52)
  \psaxes[Dy=0.2,dy=0.2\psyunit]{->}(0,0)(-6,0)(6,0.5)
  \uput[-90](6,0){$z$} \uput[0](0,0.5){$P(Z=z)$}
  \psBinomialN[markZeros,linecolor=red]{4}{.5}\psset{linewidth=1pt}
  \psBinomialN[linecolor=green]{5}{.5}\psBinomialN[linecolor=blue]{10}{.5}
  \psBinomialN[linecolor=red]{20}{.5} \psBinomialN[linecolor=gray]{50}{.5}
\end{pspicture*}
\end{document}