The following are the durations in minutes of a sample of long-distance phone ca
ID: 3054988 • Letter: T
Question
The following are the durations in minutes of a sample of long-distance phone calls within the continental United States reported by one long-distance carrier Table 1 Time (in minutes) Relative 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 4. Referring to Table 1, what is the width of each class? a. 1 minute c. 5 minutes b. 2% d. 100% SHOW YOUR WORK! 5. Referring to Table 1, what is the cumulative relative frequency for the percentage of calls that lasted under 10 minutes? a. 0.10 c. 0.59 b. 0.76 d. 0.84 SHOW YOUR WORK!
Explanation / Answer
Width of each class = 5 minutes
Cumulative relative frequency of the percentage of calls that lasted under 10 minutes = 0.59
Interval Frequency Cumulative frequency 0 - 5 0.37 0.37 5 - 10 0.22 0.59 10 - 15 0.15 0.74 15 - 20 0.10 0.84 20 - 25 0.07 0.91 25 - 30 0.07 0.98 30 or more 0.02 1Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.