Изменения

[http://ru.wikipedia.org/wiki/%D0%94%D0%B8%D1%81%D0%BA%D1%80%D0%B5%D1%82%D0%BD%D0%BE%D0%B5_%D1%80%D0%B0%D1%81%D0%BF%D1%80%D0%B5%D0%B4%D0%B5%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5#.D0.94.D0.B8.D1.81.D0.BA.D1.80.D0.B5.D1.82.D0.BD.D1.8B.D0.B5_.D1.80.D0.B0.D1.81.D0.BF.D1.80.D0.B5.D0.B4.D0.B5.D0.BB.D0.B5.D0.BD.D0.B8.D1.8F Википедия: дискретное распределение]