Question: QUESTION 12 We have calculated a confidence interval based on a sample of n = 180. Now we want to get a better estimate with

QUESTION 12 We have calculated a confidence interval based on a

QUESTION 12 We have calculated a confidence interval based on a sample of n = 180. Now we want to get a better estimate with a margin of error only one third as large. We need a new sample with n at least

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