The Table Contains the Frequency and Relative-Frequency Distributions for the Ages

The table contains the frequency and relative-frequency distributions for the ages of the employees in a particular company department. $\begin{array}{c|c|c} \text { Age (years) } & \text { Frequency } & \text { Relative frequency } \\ \hline 20 \text {-under 30 } & 3 & 0.1875 \\ 30 \text {-under 40 } & 6 & 0.375 \\ 40 \text {-under 50 } & 4 & 0.25 \\ 50 \text {-under 60 } & 1 & 0.0625 \\ 60 \text {-under 70 } & 2 & 0.125 \end{array}$