a one way analysis of variance was conducted to evaluate the null hypotheses that there is no difference high school students level of satisfaction with the school based on their family's socioeconomic status.the independent variable socioeconomic status included 3 groups: Low(M=21.36, SD=4.75, n=147, moderate(M=24.10, SD=4.15, n=143, and high (M=29.73, SD=6.85, n=135. the researcher found f(2, ?) =4.64, p=.01. what is the df for the denominator:

f (2, 435) or f (2, 432) or F(2, 438)?