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A researcher interested in Cleansburg citizens' attitudes toward a revitalized downtown area surveys a randomly selected group of 200 downtown office workers. 66% of those surveyed indicated they are in favor of revitalizing the downtown area. The researcher concluded that "about two thirds of the people in Cleansburg are in favor of revitalizing the downtown area." This conclusion might be invalid because: there was no control group. the sample is not representative of the population. 66% is not exactly two thirds. the size of the sample is too small. None of the above

A researcher interested in Cleansburg citizens' attitudes toward a revitalized downtown area surveys a randomly selected group of 200 downtown office workers. 66% of those surveyed indicated they are in favor of revitalizing the downtown area. The researcher concluded that "about two thirds of the people in Cleansburg are in favor of revitalizing the downtown area." This conclusion might be invalid because: there was no control group. the sample is not representative of the population. 66% is not exactly two thirds. the size of the sample is too small. None of the above

MATLAB: An Introduction with Applications
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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A researcher interested in Cleansburg citizens' attitudes toward a revitalized downtown area surveys a randomly selected group of 200 downtown office workers. 66% of those surveyed indicated they are in favor of revitalizing the downtown area. The researcher concluded that "about two thirds of the people in Cleansburg are in favor of revitalizing the downtown area." This conclusion might be invalid because:

  • there was no control group.
  • the sample is not representative of the population.
  • 66% is not exactly two thirds.
  • the size of the sample is too small.
  • None of the above
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