-Consider the Above One-Way ANOVA Table

Multiple Choice

$$\begin{array} { l c c } \text { Source } & \text { d.f. } & \text { Sum of Squares } \\\text { Model } & 3 & 213.88125 \\\text { Error } & 20 & 11.208333 \\\text { Total } & 23 & 225.0895\end{array}$$
-Consider the above one-way ANOVA table.How many groups (treatment levels) are included in the study?

A) 3
B) 4
C) 6
D) 20
E) 24