why do we give the decision of two-tailed test at $alpha$ level of significant? why don't i give my decision at $2 or alpha? what level of significant is a decision rule what is the decision rule for a tailed test? why do we not give the decision of two-tailed test against alternative $h_0$ explain the decision rule for a double tailed test for autocorrelation which level does a two-tailed test give its decision? what level of significance of two tested what is the decision rule for two-tailed test what level of significance in two-tailed test when to give decision rule for two-tailed test what is the decision rule of a two-tailed test which level of significant is used in two sided tests what is the decision rule in a two-tailed test what is the decision rule of a two-tailed test what is the two-tailed test why not at $2 in a two-tailed test? what is the decision rule for a double-tailed test what is the decision rule for a two-tailed test what is the decision rule in a two tailed test