a. Construct a 90% confidence interval to estimate the actual proportion of mothers with nine-month-old babies that were breast-feeding in 2018. The confidence interval has a lower limit of and an upper limit of (Round to three decimal places as needed.) b. What is the margin of error for this sample? The margin of error is (Round to three decimal places as needed.) c. Is there evidence that this proportion has changed since 2016 based on this sample? This sample V evidence that this proportion has changed since 2016, since the

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