Homework Answers
14.
Only HIspanic students are surveyed. They form only a part of the population. Interviewing only one category of students while ignoring all other student categories would lead to sample bias, i.e., the sample used in a study does not correctly represent that distribution of population.
However, given the nature of the question asked, it could also lead to response bias - i.e., the students would want to give an answer that they think is socially acceptable. In this case, the students will be more likely to say yes even if they do not.
However, the question places an emphasis on "only" a set of students being surveyed. Therefore, the answer is a.
C and D cannot be answers because response accuracy is to do with memory and here, we are surveying only a sample of students (Hispanics), therefore, we don't have uncontrolled market data.
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