Excel can be used to find the critical value for an F distribution for a given significance level.  For example, to find the critical value (the value above which you would reject the null hypothesis) for $\displaystyle \alpha={0.05}$ with $\displaystyle {d}{f}_{{\text{between}}}={3}$ and $\displaystyle {d}{f}_{{\text{within}}}={20}$, enter
=FINV(0.05,3,20) Enter this into Excel to confirm you obtain the value 3.098.

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You conduct a one-factor ANOVA with 8 groups and 9 subjects in each group (a balanced design).  Use Excel to find the critical values for $\displaystyle \alpha={0.05}$ and $\displaystyle \alpha={0.02}$ (report accurate to 3 decimal places).
$\displaystyle {F}_{{0.05}}=$
$\displaystyle {F}_{{0.02}}=$