Confidence interval for the alcohol content

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A beer producer needs to specify a confidence interval for the mean alcohol content of their beverages. From at least how many randomly selected bottles should they measure the alcohol content creating a 90% confidence interval for the alcohol content with a margin of error of at most 0.2%.

Assume that the population standard deviation is 3.0%. Round up your answer to the next integer.

Reference no: EM132401592

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