Probability Calculation: Binomial

X ∼ Binomial(n = 15, p = 0.25)
The Expected Value is E(X) = 3.75 and the Variance is V(X) = 2.812.
The probability that X is less than or equal to 2 or greater than 6 equals 0.2927.
P(X ≤ 2) + P(X > 6) = 0.2927