Question

Argumenta porque E(X-E(x)) = 0

Answer 1

PREGUNTA

Argumenta porque E(X-E(x)) = 0

SOLUCIÓN

Hola‼ (⌐■_■)

Realizaremos un pequeño cambio de variable

$E(x-E(x)) = 0\\\\z = x - E(x) \rightarrow E(z) = 0\\\\Entonces\\\\E(z) =0 \: tambi\'en \: lo \: es\: E(x) = 0 \\\\E(x-E(x))=0\\\\E(x - 0) = 0\\\\E(0) = 0\\\\0=0$