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# Birth weights (a) Is the sample range an unbiased ISBN: 9781429245593 85

## Solution for problem R7.3 Chapter 7

The Practice of Statistics | 4th Edition

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Problem R7.3

Birth weights (a) Is the sample range an unbiased estimator of the population range? Give evidence from the graph above to support your answer. (b) Explain how we could decrease the variability of the sampling distribution of the sample range. s Find the mean and standard deviation of the sampling distribution of a sample proportion p for an SRS of size n from a population having proportion p of successes. s Check whether the 10% and Normal conditions are met in a given setting. s Use Normal approximation to calculate probabilities involving p

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##### ISBN: 9781429245593

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