13 lines
439 B
Fortran
13 lines
439 B
Fortran
SUBROUTINE tutest(data1,n1,data2,n2,t,prob)
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INTEGER n1,n2
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REAL prob,t,data1(n1),data2(n2)
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CU USES avevar,betai
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REAL ave1,ave2,df,var1,var2,betai
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call avevar(data1,n1,ave1,var1)
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call avevar(data2,n2,ave2,var2)
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t=(ave1-ave2)/sqrt(var1/n1+var2/n2)
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df=(var1/n1+var2/n2)**2/((var1/n1)**2/(n1-1)+(var2/n2)**2/(n2-1))
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prob=betai(0.5*df,0.5,df/(df+t**2))
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return
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END
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