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An Improved Approximate Formula for Calculating Sample Sizes for Comparing Two Binomial Distributions

J. T. Casagrande, M. C. Pike and P. G. Smith
Biometrics
Vol. 34, No. 3 (Sep., 1978), pp. 483-486
DOI: 10.2307/2530613
Stable URL: http://www.jstor.org/stable/2530613
Page Count: 4
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An Improved Approximate Formula for Calculating Sample Sizes for Comparing Two Binomial Distributions
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Abstract

An improved approximate formula is derived for determination of the sample sizes required for detecting the difference between two binomial parameters with specified type I and type II errors.

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