a)
P(A) = (1 - 0.603)^4 * 0.603 = 0.0150
P(B) = (1 - 0.603)^2 * 0.603 * (1 - 0.603) * 0.603 * (1 - 0.603)^3 = 0.603^2 * (1 - 0.603)^6 = 0.0014
P(C) = (20 über 19) * 0.96^19 * (1 - 0.96)^1 + (20 über 20) * 0.96^20 * (1 - 0.96)^0 = 0.8103
c)
p: Anteil der Frauen an der Bevölkerung
p·0.76 + (1 - p)·0.69 = 0.726 --> p = 0.5143