The following are the duration in minutes of a sample of long distance phone calls made reported by one long distance carrier : Time in Minutes Relative Frequency 0 but less than 5 .37 5 but less than 10 .22 10 but less than 15 .15 15 but less than 20 .10 20 but less than 25 .07 25 but less than 30 .07 30 or more .02 referring above table if 1000 calls were randomly sampled how many calls lasted under 10 minutes.
Added by Cody A.
Step 1
The cumulative relative frequency is the sum of the relative frequencies up to that category. For the category "0 but less than 5", the cumulative relative frequency is 0.37. For the category "0 but less than 10", the cumulative relative frequency is 0.37 + 0.22 Show more…
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Supreeta N.
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. 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 Referring to the table, what is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more? Select one: 0.16 0.24 0.41 0.90
Adi S.
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 a. What is the width of each class? b. If 1,000 calls were randomly sampled, how many calls lasted under 10 minutes? c. If 100 calls were randomly sampled, how many calls lasted 15 minutes or longer? d. If 10 calls lasted 30 minutes or more, how many calls lasted less than 5 minutes? What is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes? What is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more? If 100 calls were randomly sampled, ________ of them would have lasted at least 15 minutes but less than 20 minutes. If 100 calls were sampled, ________ of them would have lasted less than 15 minutes. If 100 calls were sampled, ________ of them would have lasted 20 minutes or more. If 100 calls were sampled, ________ of them would have lasted less than 5 minutes or at least 30 minutes or more.
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