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2. (5 pts) An epidemiologist makes a measurement in her rare disease laboratory and records the result in her lab report. The standard deviation for this particular measurement is 0' = 54 milligrams. She repeats the measurement 9 times and records the mean f of her 9 measurements. What is the stande deviation of the epidemiologist's mean result? That is, if she kept on making 9 measurements and averaging them, What would be the standard deviation of all her 22's