The samples from two populations are shown : Sample 1 Sample 2 20 2 35 29 55 The critical value for the ANOVA test should have dfN (degrees of freedom in the numerator) and dfD (degrees of freedom in the denominator) of O dfN = 3, dfD = 1 O dfN = 1, dfD = 1 O dfN = 1, dfD = 3 O dfN = 3, dfD = 2