QuestionA mobile service provider surveys 5,000 customers about privacy. 350 respond, with $60\%$ concerned. What bias affects results? (A) Undercoverage (B) Voluntary response (C) Convenience sample (D) Response bias

Studdy Solution
Based on the analysis in3, the most concerning potential source of bias in the provider's survey is (A) Bias from undercoverage. This is because the provider only manages to reach a small fraction of the customers they attempt to contact. This could mean that certain groups (like those who are less likely to answer the phone) are underrepresented in the survey results.
So, the answer is (A) Bias from undercoverage.