In 1936 only richer households had telephones, cars and magazine subscriptions. So the survey reached the:
AWeavers
BWealthy
CWarders
DWardens
Answer & Solution
Correct answer: B. Wealthy
1. The mailing lists came from those sources.
2. Poorer voters were absent from them.
3. So only the wealthy were reached.
_Source: OpenStax Contemporary Mathematics, Chapter 8, Statistics._
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