Question 3 Find the critical F-value for a right-tailed test using the indicated level of significance a and degree s of freedom d.f.N and d.f.D. alpha=0.05, d. f. N = 6, d. f. D = 21 The critical F- value is (Round to two decimal places as needed.) Solution The critical value is F(0.95, df1=6, df2=21) =2.57 (from F table).