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ESTIMACION POR INTERVALO EN EL CASO DE MUESTRAS INDEPENDIENTES El interés es estimar la diferencia entre dos medias poblacionales µ1-µ2 . El metodo depenande de los tamaños de la muestra n1 y n2.
ESTIMACION CON MUESTRAS GRANDES • La estimación puntual de la diferencia entre µ1- µ2 esta dada por la diferencia entre las dos medias muestrale . • En La distribution normal de las diferencias entre las medias muestrales utiliza la desviacion normal z para construir el intervalo.
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