Some government leaders propose allowing oil companies to drill in currently protected lands that may be rich in oil reserves. Environmental researchers argue that drilling in such lands would be harmful to the surrounding
ecosystem. To measure support for drilling in such lands, an oil company representative uses random-digit
telephone dialing to contact adults in the region and measure opinion for increased drilling. One question in the
survey asks, "Given that an increase in drilling could result in increased tax revenue and additional jobs to the
region, would you support a proposal to allow drilling in lands currently protected from drilling?" What type of bias
could be most likely affecting the survey results?
O This is undercoverage bias because some segments of the population will be excluded from the sample.
O This is response bias because those selected for the survey may not provide truthful opinions about oil drilling
O This is voluntary response bias because those most passionate about drilling will be more likely to register an
opinion
O This is question wording bias because the information given at the start of the question may lead those surveyed
towards a desired response
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