f X ∼ B (10, 0.5 ) ( X is Binomial with n=10, p=0.5)

P(X = 9) =

(3 decimals)

X ∼ B (3, 0.5 )

P(X=1)=

(3 decimals)

X ∼ B (4, 0.5) ,

P(2 ≤ X ≤ 3) =

(3 decimals)