Question

15.28 Asking about smoking habits. A 2012 Gallup survey of 1014 American adults asked participants about their smoking habits. Gallup has been conducting this survey yearly since 1944. The 2012 report was titled “In U.S., Smokers Light Up Less Than Ever,” reflecting the fact that only 1% of smokers in this latest survey stated that they smoke more than a pack a day. Gallup added the following comment to its report:

• It is possible that the decline in reports of smoking is the result of respondents’ awareness that smoking is socially undesirable. Therefore, respondents may aim to present themselves in the best possible light to the interviewer and underestimate the amount they truly smoke.

• What type of bias is Gallup describing? Would it be included in the margin of error of a 95% confidence interval for the proportion of all adult smokers who smoke more than a pack a day?

• Gallup is describing a response bias.

Answer 1

What type of bias is Gallup describing?

ANSWER = Response

Would it be included in the margin of error of a 95% confidence interval for the proportion of all adult smokers who smoke more than a pack a day? Gallup is describing a response bias.

ANSWER = YES

ANSWERED

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