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Gary is studying the prevalence of regional dialects. He surveyed 351

 people in a region and asked what

words they used for certain things. 292

 of the respondents referred to soft drinks as "pop," as opposed to "soda" or "cola." Give the 90%

 confidence interval for the proportion of people in this region who refer to soft drinks as "pop." Use Excel to create the confidence interval, rounding to four decimal places.

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