Elementary probability models and statistical inference [by] Douglas G. Chapman [and] Ronald A. Schaufele. Chapman, D. G. (Douglas George), 1920- Schaufele, Ronald A., joint author. Probabilities. Mathematical statistics. QA273 .C49 519 CHE Bibliography: p. 339. Waltham, Mass., Ginn-Blaisdell [1970] [1970] 1970 Text xix, 358 p. eng