A researcher wishes to determine the average number of text messages per month sent by high school students who have cell phones. A) Ask a random sample of 100 students how many text messages they send. B) Ask a random sample of 100 students with cell phones how many text messages they send. C) Interview 100 students in the mall who are seen talking on their cell phones. D) Randomly select the cell phone records of 100 high school students.
A researcher wishes to determine the average number of text messages per month sent by high school students who have cell phones. A) Ask a random sample of 100 students how many text messages they send. B) Ask a random sample of 100 students with cell phones how many text messages they send. C) Interview 100 students in the mall who are seen talking on their cell phones. D) Randomly select the cell phone records of 100 high school students.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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For problems 11 and 12, select the most representative sample of the population of interest.
11) A researcher wishes to determine the average number of text messages per month sent by high school students who have cell phones.
A) Ask a random sample of 100 students how many text messages they send.
B) Ask a random sample of 100 students with cell phones how many text messages they send.
C) Interview 100 students in the mall who are seen talking on their cell phones.
D) Randomly select the cell phone records of 100 high school students.
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