Find the Mean for the Given Sample Data $\begin{array} { l l l l l } 3.5 & 1.6 & 2.4 & 3.7 & 4.1 \end{array}$

Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.
-The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the mean monthly precipitation. $\begin{array} { l l l l l } 3.5 & 1.6 & 2.4 & 3.7 & 4.1 \end{array}$
$\begin{array} { l l l l l } 3.9 & 1.0 & 3.6 & 4.2 & 3.4 \end{array}$
$\begin{array} { l l l l l } 3.7 & 2.2 & 1.5 & 4.2 & 3.4 \end{array}$
$\begin{array} { l l l l l } 2.7 & 0.4 & 3.7 & 2.0 & 3.6 \end{array}$

A) $3.27 \mathrm { in }$ .
B) $2.94 \mathrm { in }$ .
C) $2.80 \mathrm { in }$ .
D) $3.09 \mathrm { in }$ .