TABLE 2-5 The following are the duration in minutes of a sample of long-distance phone calls...
TABLE 2-5
The following are the duration in minutes of a sample of
long-distance phone calls made within the continental United States
reported by one long-distance carrier.
Relative
Time (in Minutes) Frequency
0 but less than 5 0.37
5 but less than 10 0.22
10 but less than 15 0.15
15 but less than 20 0.10
20 but less than 25 0.07
25 but less than 30 0.07
30 or more 0.02
Referring to Table 2-5, what is the cumulative relative frequency
for the percentage of calls that lasted 20 or more minutes?
|
0.47 |
||
|
0.84 |
||
|
0.16 |
||
|
0.10 |
Homework Answers
the cumulative relative frequency for the percentage of calls that lasted 20 or more minutes = 0.07 + 0.07 + 0.02 = 0.16
Ans: 0.16
option C
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TABLE 2-5
The following are the duration in minutes of a sample of
long-distance phone calls...
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