A conservative radio talk show host with a large audience is interested in the proportion p of adults in his listening area who think the drinking age should be lowered to eighteen. To find this out, he poses the following question to his listeners: “Do you think that the drinking age should be reduced to eighteen in light of the fact that eighteen year‐olds are eligible for military service?” He asks listeners to phone in and vote “Yes” if they agree the drinking age should be lowered and “No” if not. Of the 100 people who phoned in, 70 answered “Yes.” a. List one source of sampling bias (i.e. bias based on the people included in the sample). b. List another source of bias (sampling or non-sampling).
A conservative radio talk show host with a large audience is interested in the proportion p of
adults in his listening area who think the drinking age should be lowered to eighteen. To find
this out, he poses the following question to his listeners: “Do you think that the drinking age
should be reduced to eighteen in light of the fact that eighteen year‐olds are eligible for military
service?” He asks listeners to phone in and vote “Yes” if they agree the drinking age should be
lowered and “No” if not. Of the 100 people who phoned in, 70 answered “Yes.”
a. List one source of sampling bias (i.e. bias based on the people included in the sample).
b. List another source of bias (sampling or non-sampling).
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