Question: Online publishing. Publishing scientific papers online is fast, and the papers can be long. Publishing in a paper journal means that the paper will live forever in libraries. The British Medical Journal combines the two: it prints short and readable versions, with longer versions available online. Is this OK with authors? The journal asked a random sample of 104 of its recent authors several questions.

One question was "Should the journal continue using this system?" In the sample, 72 said "Yes." What proportion of all authors would say "Yes" if asked? (Estimate with \(95 \%\) confidence.) Do the data give good evidence that more than two-thirds \((67 \%)\) of authors support continuing this system? Answer both questions with appropriate inference methods.

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