P0 = 0,96

P1 = P0*0,96/(P0*0,96 + (1-P0)*0,05) = 0,96*0,96/(0,96*0,96 + 0,04*0,05) = 0,997835

1-P1 = 0,002165

P2 = P1*0,96/(P1*0,96 + (1-P1)*0,05) = 0,997835*0,96/(0,997835*0,96 + 0,002165*0,05) = 0,999887