Let x, the number of flaws on the surface of a randomly selected boiler of a certain type, have a poisson distribution with parameter μ = 5. use the cumulative poisson probabilities from the appendix tables to compute the following probabilities. (round your answers to three decimal places.) (a) p(x ≤ 7) (b) p(x = 7) (c) p(9 ≤ x) (d) p(5 ≤ x ≤ 7) (e) p(5 < x < 7)