Respuestas

2012-09-13T18:25:58+02:00

Por binomial:

 

exito:sale 6

p=P(exito)=1/6

1-p=5/6

 n=12

P(x)=(C(n,x))(p^x)(1-p)^(n-x))   x=1,2.......n

 

P(0)=(C(12,0))(1/6^0)(5/6)^(12-0))=0.112

 

P(4)=(C(12,4))(1/6^4)(5/6)^(8))=0.088

 

p(x>=1)=1-p(x<1)=1-p(x=0)=1-0.112=0.888