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1. El rendimiento en una determinada zona de dos variedades de trigo A y B tiene una distribucin conjunta normal bidimensional de medias 1,2 y
1. El rendimiento en una determinada zona de dos variedades de trigo A y B tiene una distribucin conjunta normal bidimensional de medias 1,2 y 1,5 t/ha y varianzas 0,09 y 0,49 (t/ha)2. El coeficiente de correlacin es -0,4. Un agricultor sembr un total de 6 ha de la variedad A y 4 ha de la B. Calcular la probabilidad de que su cosecha total sea superior a 13,0 t
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