Use the Following Information for Questions

Use the following information for questions:
A television station plans to ask a random sample of 400 city residents if they can name the news anchor on the evening news at their station. They plan to fire the news anchor if fewer than 10% of the residents in the sample can do so. Suppose that 12% of city residents in the sample could name the anchor when asked.
-Calculate a 95% confidence interval for the population proportion of city residents who can name the news anchor on the evening news at their station.

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