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La probabilidad de que un nio tenga Dficit de Atencin (DA) en una escuela elemental es de 0.20. Se seleccionan 7 nios de dicha escuela.

La probabilidad de que un nio tenga Dficit de Atencin (DA) en una escuela elemental es de 0.20. Se seleccionan 7 nios de dicha escuela. Cul es la probabilidad de que:

a) por lo menos 4 nios sufran de DA?

b) 2 nios sufran de DA?

c) A lo mximo 3 nios sufran de DA?

d) Entre uno y 4 nios sufran de DA?

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