In a two-factor experiment where factor A consists of 5 levelsfactor B consists

In a two-factor experiment where factor A consists of 5 levelsfactor B consists of 4 levels and there is only one observation oneach of the 20 treatments the critical value for testing the nullhypothesis that the different levels of factor B have no effect ontrue average response at significance level .05 is denoted by____________________ and is equal to ____________________.