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Journal Article APPLICATIONS OF THE NON-CENTRAL t-DISTRIBUTION Get access N. L. JOHNSON, N. L. JOHNSON Search for other works by this author on: Oxford Academic Google Scholar B. L. WELCH B. L. WELCH Search for other works by this author on: Oxford Academic Google Scholar Biometrika, Volume 31, Issue 3-4, March 1940, Pages 362–389, https://doi.org/10.1093/biomet/31.3-4.362 Published: 01 March 1940
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Johnson et al. (1940) studied this question.
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