TABLE 2- 5
The following are the durations in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier.
$$\begin{array}{l}
\begin{array} { l l }
\hline&\text { Relative}\\text { Time (in Minutes) }&\text { Frequency }\
\hline0 \text { but lessthan } 5 & 0.37 \
5 \text { but less than } 10 & 0.22 \
\text { 10 but lessthan } 15 & 0.15 \
\text { 15 but less than } 20 & 0.10 \
\text { 20 but lessthan } 25 & 0.07 \
\text { 25 but lessthan } 30 & 0.07 \
30 \text { or more } & 0.02 \
\hline
\end{array}
\end{array}$$
-Referring to Table 2-5, if 100 calls were sampled,______of them would have lasted less than 15 minutes.
A) 10
B) 26
C) 74
D) none of the above

Question

TABLE 2- 5
The following are the durations in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier.
 $$\begin{array}{l}
\begin{array} { l l } 
\hline&\text { Relative}\\text {  Time (in Minutes) }&\text { Frequency }\
\hline0 \text { but lessthan } 5 & 0.37 \
5 \text { but less than } 10 & 0.22 \
\text { 10 but lessthan } 15 & 0.15 \
\text { 15 but less than } 20 & 0.10 \
\text { 20 but lessthan } 25 & 0.07 \
\text { 25 but lessthan } 30 & 0.07 \
30 \text { or more } & 0.02 \
\hline
\end{array}
\end{array}$$
-Referring to Table 2-5, if 100 calls were sampled,______of them would have lasted less than 15 minutes.
A) 10
B) 26
C) 74
D) none of the above

Quizplus · Accepted Answer

The relative frequencies for calls lasting less than 15 minutes are 0.37 (0-5 minutes), 0.22 (5-10 minutes), and 0.15 (10-15 minutes). Adding these gives 0.74, so 74 out of 100 calls lasted less than 15 minutes.

TABLE 2- 5 the Following Are the Durations in Minutes

TABLE 2- 5
the Following Are the Durations in Minutes