Question 907910
p(def) = .026 , n = 42
P(x=3) = binompdf(42, .026, 3)
P(x > 2) = 1 - P(x≤1) = 1 - binomcdf(42, .026, 1)
P(at least one) = 1 - P(none) = 1 - binompdf(42, .026, 0)