Unformatted text preview: . The medical director of a large company looks at the medical records of 72 executives in this age group and finds that the mean systolic blood pressure for these executives is 126.07 . Below are histograms of the values taken by three sample statistics in several hundred samples from the same population. The true value of the population parameter is marked on each histogram. 4. Which statistic has the largest bias among these three? Justify your answer. 5. Which statistic has the lowest variability among these three? 6. Based on the performance of the three statistics in many samples, which is preferred as an estimate of the parameter? Why? Chapter 9...
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 Spring '09
 Mr.Brown
 Statistics, Standard Deviation, Democracy

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