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En una fSbrica de manufactura Ia produccin de Ias piezas sigue una distribuci6n bimmial_ Si probabilidad de producir un articulo defectuoso es de 0.1

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En una fSbrica de manufactura Ia produccin de Ias piezas sigue una distribuci6n bimmial_ Si probabilidad de producir un articulo defectuoso es de 0.1 y seleccionamos azar 10 articulos, Ia probabilidad que: (I punto c/u) A) Ninguno sea defectuoso as: 0.6648 b. 0.5987 c. 0.3487 3) A 10 mSs uno sea defectuoso s: a. 0.7361 b. 0.9824 c. 0.7824 . 08386 d. 0.8824 Oel experimento de Ia pregunta I, varianza del nmero de articulos defectuosos es: (I punto) a) 0.164 c) 0664 d) O_S64 Sea X eI nmero de horas semanales que un estudiante de Ia LIPT dedica al estudio_ Se cree que X se distribuye normalmente con media de 20 horas y desviacin estndar de 5 horas. Se selecciona aleatoriamente un estudiante universitario de Ia L.IPT_ La probabilidad que eI estudiante dedique: (2 punto c/u) A) S) C) O) MSS de 3S Fm-as semanales es: 0.00250 b. 000240 ntre 25 y 30 horas semanales inclusive: 0.02140 2S o menos semanales: 0.74134 b. O_OSS80 b. 0.84134 b. 0.99984 c. 0.00135 c. 0.13591 c. 0.94134 3S o menos semanales: 0.99865 d. 0.00350 d. 0.04910 d. 0.54134 d. 0.9888

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