3.2 Two factor experimental design
Table 3 shows the results obtained on the effect of
types of wastes and days of the experiment using two
ways analysis of variance. The analysis reveals that
wastes fed into the digester and days of experiment were
significant at 99% confidence level. The hypothesis of
equal mean treatment effect of wastes and days of
experiment is therefore rejected. This study shows that
the days of the experiment did not record the same mean
values of biogas production.