例03-09程序.sas

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;