TABLE 2-6
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.

-Referring to Table 2-6, what is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more?
A) 0.16
B) 0.24
C) 0.41
D) 0.90

Question

TABLE 2-6
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.
 
-Referring to Table 2-6, what is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more?
A) 0.16 
B) 0.24 
C) 0.41 
D) 0.90

Quizplus · Accepted Answer

To find the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more, we need to add up the relative frequencies of all the durations that are 10 minutes or more. From the table, we see that the relative frequency of calls lasting 10 minutes or more is 0.41. Therefore, the cumulative relative frequency is also 0.41.

TABLE 2-6 The Following Are the Durations in Minutes of a Sample