Exhibit 1-5
the Following Is a Frequency Distribution of the Monthly

Exhibit 1-5
The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga.
$\begin{array}{|c|c|c|}\hline\text { Class } & \text { Expenditure \$) } & \text { \# of households } \\\hline 1 & 0 \text { and under } 20 & 42 \\\hline 2 & 20 \text { and under 40 } & 64 \\\hline 3 & 40 \text { and under } 60 & 34 \\\hline 4 & 60 \text { and under } 80 & 28 \\\hline 5 & 80 \text { and under } 100 & 20 \\\hline 6 & 100 \text { and over } & 12\\\hline\end{array}$
-Refer to Exhibit 1-5. What is the cumulative relative frequency of the 2nd class?

A) .32
B) .64
C) .36
D) .53