function barzzy0(nn,xx,xmu,xstd)
%本函數供exm070922_1調用
%本函數故意設置了個錯誤
clf,
bar(xx,nn);hold on
Ylimit=get(gca,'YLim');
yy=0:Ylimit(2);
xxmu=xmu*size(yy);           
xxL=xxmu/xmu*(xmu-xstd);
xxR=xxmu/xmu*(xmu+xstd);
plot(xxmu,yy,'r','Linewidth',3)	        %<11>
plot(xxL,yy,'rx','MarkerSize',8)
plot(xxR,yy,'rx','MarkerSize',8),hold off