Respuesta :

LammettHash
[tex]\mathbb P(8<X<16)=\mathbb P\left(\dfrac{8-12}2<\dfrac{X-12}2<\dfrac{16-12}2\right)=\mathbb P(-2<Z<2)[/tex]

The empirical rule states that approximately [tex]95\%[/tex] of a normal distribution lies within two standard deviations of the mean.