Compute the following binomial probabilities directly from the formula for b(x; n, p). (Round your answers to three decimal places.)
(a) b(4; 8, 0.25) 0.087
(b) b(6; 8, 0.55) 0.157
(c) P(3 ≤ X ≤ 5) when n = 7 and p = 0.65 0.710
(d) P(1 ≤ X) when n = 9 and p = 0.15 0.769