8. Hypothesis testing 1. Significance test for the population regression equation 1)Hypothesis Hl:b1=…=b=0 Hy: there exsits ko such that bm +o 2)F-statistiC: ESS k RSS F(k,n-k-1) n-k8. Hypothesis testing 1. Significance test for the population regression equation 1) Hypothesis: 2) F-statistic: 0 1 : 0 vs H b b = = =k 0 1 0 : there exsits such that 0 H k bk  ESS ( , 1) RSS 1 k F F k n k n k = − − − −