How do Americans feel about ads on websites? A survey of 1,000 adult Internet users found that 670 opposed ads on websites. (Data extracted from S. Clifford, 'Tracked for Ads? Many Americans Say No Thanks," The New York Times, September 30, 2009, p. B3.) Suppose that a survey of 1,000 Internet users age 12-17 found that 510 opposed ads on websites.
a. At the 0.05 level of significance, is there evidence of a difference between adult Internet users and Internet users age 12-17 in the proportion who oppose ads?
b. Determine the p-value in (a) and interpret its meaning.