Final answer:
Undercoverage bias is a possible problem with this survey as it may not accurately represent the entire population.
Step-by-step explanation:
A possible problem with this survey is undercoverage bias. Undercoverage bias occurs when certain groups within the population have a lower chance of being included in the survey sample, leading to results that may not accurately reflect the entire population. In this case, the survey was only mailed to a random set of 5,000 households, so it is possible that certain households were missed, potentially leading to biased results.
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