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An analysis of systolic blood pressure data shows that the mean is 127.2, with a margin of error of 1.2. What is the confidence interval?

An analysis of systolic blood pressure data shows that the mean is 127.2, with a margin of error of 1.2. What is the confidence interval? 127.2, 1.2 127.2, 128.4 126.0, 128.4 126.0, 127.2

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