In 2005, 13,000 Internet users were surveyed and asked about their willingness to pay fees for access to websites. Of these, 2,938 were definitely not willing to pay such fees. Construct a 95 percent confidence interval for the proportion definitely unwilling to pay fees.
A) [.286, .302]
B) [.219, .233]
C) [.220, .232]
D) [.212, .241]
E) [.214, .245]

Question

Quizplus · Accepted Answer

= 2938 / 13,000 = .226
[± ] = [.226 ± 1.96]
= [.226 ± .00719] = [.219, .233]

In 2005, 13,000 Internet Users Were Surveyed and Asked About