Question
2. The local health department conducted a study to assess the effectiveness of a new public health campaign aimed at increasing the proportion of residents who receive annual flu vaccinations. Prior to the campaign, historical data indicated that 45% of the town's population received annual flu vaccinations. After the campaign, a random sample of 400 residents showed that 190 of them had received their flu vaccination this year. Is there convincing evidence that the new public health campaign increased the proportion of residents who receive annual flu vaccinations?
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