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A sample of 12 measurements has a mean of 38 and a standard deviation of 2.5. Suppose that the sample is enlarged to 14 measurements,

A sample of 12 measurements has a mean of 38 and a standard deviation of 2.5. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 38 each. Find the mean of the sample of 14 measurements. Find the standard deviation of the sample of 14 measurements

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