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In a survey, 200 people were asked to identify their major source of news information; 110 stated that their major source was television news.

(a) Construct a 95% confidence interval estimate for the proportion of people in the population who consider television their major source of news information. ______________

(b) How large a sample would be necessary to estimate the population proportion with a margin of error of 0.05 at 95% confidence? ____________

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