(a)

P(F|E,Alignierung) = 0.3 * 0.8 * 0.5 = 0.12

P(E) = 0.01*0.2*0.1*0.01 = .000002

P(F|E,Alignierung) * P(E) = 0.12 * .000002 =   .00000024

(b)

P(F|E,Alignierung) = 0.4 * 0.8 * 0.5 = .160

P(E) = 0.01*0.05*0.1*0.01 = .0000005

P(F|E,Alignierung) * P(E) = 0 .16 * .0000005 = .0000000800