Answer the following quesiton with steps, thank you

Let (x), y, z" ) be drawn according to the joint distribution p(x, y, z) in an independent and identically distributed (i.i.d.) manner. We say that (x",y", z") is jointly &-typical if all the following conditions are met . |H(x" ) - H (X ) | SE . [H ()" ) - H ( Y) |