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A research team randomly selects 200 people from a city directory to survey about commuting habits. Of the 200, only 140 complete the survey. The researcher reports results based only on the 140 respondents. Which statement is most accurate?
A research team randomly selects 200 people from a city directory to survey about commuting habits. Of the 200, only 140 complete the survey. The researcher reports results based only on the 140 respondents. Which statement is most accurate?