Following the model of London, England, Center City, USA decides to install closed circuit television (CCTV) cameras in a downtown park in hopes of reducing the public's fear of crime. Which technique would be the best choice to determine if fear has in fact decreased?
a. Send out a questionnaire to all citizens living in Center City, USA.
b. Select, via simple random sampling, 20 citizens to interview.
c. Interview, via convenience sampling, citizens that are in the park.
d. None of these answers are correct.
C
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