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A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season

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A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3,500 and is routinely sold out. It was discovered that a total of 240 fans out of a random sample of 400 purchased concessions during the game. Construct a? 95% confidence interval to estimate the proportion of fans who purchased concessions during the game.

The? 95% confidence interval to estimate the proportion of fans who purchased concessions during the game is (___,___)

?(Round to three decimal places as? needed.)