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Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (1.9,2.9) when

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Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (1.9,2.9) when estimating the mean height (in centimeters) of a sample of seedlings. . . . The estimated margin of error is The sample mean is

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