According to a government agency, 55.5% of mothers in a certain region were breast-feeding their nine-month-old babies in 2016. Suppose a health insurance company would like to estimate the proportion...

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Extracted text: According to a government agency, 55.5% of mothers in a certain region were breast-feeding their nine-month-old babies in 2016. Suppose a health insurance company would like to estimate the proportion of mothers in the region who breast-fed their children at nine months in 2018. A random sample of 207 mothers with nine-month-old babies was selected, 123 of which were breast-feeding. Complete parts a through c. 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