Sound Engineers Studied Factors That Might Affect the Output (In

Multiple Choice

Sound engineers studied factors that might affect the output (in decibels) of a rock concert speaker system. The results of their ANOVA tests are shown (some information is missing) . $$\begin{array} { l r r l r l } \hline \text { Source of Variation } & { S S } & d f & M S & F & P \text {-value } \\\hline \text { Amplifier } & 99.02344 & & 99.02344 & & 0.005718 \\\text { Position } & 93.98698 & & 31.32899 & 3.215807 & 0.051003 \\\text { Interaction } & 10.15365 & 3 & 3.384549 & 0.347412 & 0.791505 \\\text { Error } & 155.875 & 16 & 9.742188 & & \\\\\text { Total } &359.0391 & 23& & & \\\hline\end{array}$$ Which is the number of amplifiers and positions tested?

A) 1, 3
B) 2, 4
C) 3, 5
D) 4, 1