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

Multiple Choice

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 under 20 minutes?

A) 0.10
B) 0.59
C) 0.76
D) 0.84