Consider a Two-Way Analysis of Variance Experiment with Treatment Factors

Essay

Consider a two-way analysis of variance experiment with treatment factors A and B.The results are summarized below.
$$\begin{array} { l r r } \text { Source of Variation } & d f & \text { SS } \\\text { Factor A } & 4 & 86 \\\text { Factor B } & 5 & 75 \\\text { Interaction } & 20 & 75 \\\text { Error } & 90 & 300 \\\text { Total } & 119 & 536\end{array}$$
$$\begin{array} { l r r } \text { Source of Variation } & d f & \text { SS } \\\text { Factor A } & 4 & 86 \\\text { Factor B } & 5 & 75 \\\text { Interaction } & 20 & 75 \\\text { Error } & 90 & 300 \\\text { Total } & 119 & 536\end{array}$$
What are the levels of Factor A and Factor B?