For conducting a​ two-tailed hypothesis test with a certain data​ set, using the smaller of n1minus1 and n2minus1 for the degrees of freedom results in dfequals​11, and the corresponding critical values are tequalsplus or minus2.201. Using the formula for the exact degrees of freedom results in dfequals​19.063, and the corresponding critical values are tequalsplus or minus2.093. How is using the critical values of tequalsplus or minus2.201 more​ "conservative" than using the critical values of plus or minus​2.093?