Solve the Problem $$\begin{array} { l l l l l } 128 & 147 & 186 & 105 & 197 \\155 & 172 & 130 & 116 & 125\end{array}$$

Multiple Choice

Solve the problem.
-The signal-to-noise ratio of a set of data is obtained by dividing the mean by the standard deviation. Find the signal-to-noise ratio for the following sample of weights (in pounds) : $$\begin{array} { l l l l l } 128 & 147 & 186 & 105 & 197 \\155 & 172 & 130 & 116 & 125\end{array}$$

A) 4.9
B) 4.5
C) 0.2
D) 4.7