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Journal Article ON THE DISTRIBUTION OF THE FIRST PRODUCT MOMENT-COEFFICIENT, IN SAMPLES DRAWN FROM AN INDEFINITELY LARGE NORMAL POPULATION Get access KARL PEARSON, KARL PEARSON Search for other works by this author on: Oxford Academic Google Scholar G. B. JEFFERY, G. B. JEFFERY Search for other works by this author on: Oxford Academic Google Scholar ETHEL M. ELDERTON ETHEL M. ELDERTON Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 21, Issue 1-4, December 1929, Pages 164–193, https://doi.org/10.1093/biomet/21.1-4.164 Published: 01 December 1929
PEARSON et al. (Sun,) studied this question.