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Suppose researchers drew a random sample of 19 newborn babies born at a large hospital. They found a sample mean weight of 3432 grams, and a sample standard deviation of s = 496 grams. Suppose we are interested in calculating a confidence interval for mu, the true mean weight of newborn babies born at this hospital.

a) What is the margin of error of a 95% confidence interval for the population mean weight?

Round your response to at least 3 decimal places.

b) What is the margin of error of a 90% confidence interval for the population mean weight?

Round your response to at least 3 decimal places.

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