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Use the ChessRatingComparison file, suppose the chessed.com wants to report the median m and twentieth percentile mo.2 of USCF score. (a) Provide a point estimator

Use the ChessRatingComparison file, suppose the chessed.com wants to report the median m and twentieth percentile mo.2 of USCF score. (a) Provide a point estimator for USCF median and twentieth percentile respectively. (b) Provide a 95% confidence interval estimator for USCF medjian and twentieth percentile respec- tively. There is no simple formula to compute standard deviation of median and percentile. Please use bootstrap to estimate the confidence interval

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