Mathematics, 25.01.2021 20:20 blacee01

A website asks visitors to vote for which of several user-submitted videos is funniest. After a few days they have collected 250 votes, and they would like to construct a 95% confidence interval for the proportion of visitors who prefer one of the videos. However, they recognize that their sampling method involves voluntary response, so the data may be biased. How can they compensate for this problem when constructing their confidence interval

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