SAS应用_医学统计学的例题程序及其结果,学习SAS的必备资料.

				data ex3_9;
				  n1=102;
				  n2=100;
				  m1=0.57;
				  m2=0.48;
				  s1=0.89;
				  s2=0.82;
				  delta=0.52;
				  ss1=s1**2*(n1-1);
				  ss2=s2**2*(n2-1);
				  sc2=(ss1+ss2)/(n1+n2-2);
				  se=sqrt(sc2*(1/n1+1/n2));
				  t=(m1-m2-delta)/se;
				  p=probt(t,n1+n2-2)*2;
				proc print;
				  var t p;
				run;