?λ?????????????????30?????????????????????30????????2??????????????40????50????60??70??????????????2????????????????????????????????????????????????????????????в????????????????????????
?????????????3????????д?????????????????3?????-?????????????и?????
1???μ???????30*3=90??????45?????+45?????????????????????????????8???????????????????1190???飬???????????????????????2?????80*7=560???飬??????4????80+136+368=584???顣
1?????170,2??280??3?? 510??
????????ó??????????????????????????????PK??????????????????????????????????????????С?Ч????????
?????????3?????100/368??????????????????????????216/336?????64.3%,??4??????????????584/604,96.7%.
?????????????????????????10???飬???20?????50???飬????1?????13?????26??
??????????????????????????????????????????????????????
1??1??0/50????5??0/50?????????2????????????60???飬??????????50????????83%
1??1??0/80????4??0/80???????????2????????????80???飬????????100????????80%?????????ū????????????4??+????????????????????? 2??+?????(???????????????????????????????????????????????????????)
????￡?????????????????????A/B??A?С?????????????????A??????B???????????????????鷳??
????????????????????????????????????????40407???????40407????????
