???????4???????5????????,?????????????????

???????????——??????????

?????????????????????????????????2??1???1??=1/900??????=1/30???????λ??0.035555556????1?????28.125?Σ????35???????1?????984.375???????5?????4921.875??????

??????????????????????V5???????????288??????30?????????120??????4??(50*2+100*2)480?????918??

????????????????????????12*2+6*4(??????????в?)+12*2+6*2(???????????????)=84?????????12*5=60??5????????????(?????????????????????????????????????????????????????????????????3?Σ?????2.5?μ???)12*5*2.5=150????? 294??

???????918-294=624??4921.875/624=7.887620192????8???????8??????????????????????????????0????????????

????????д???δ?5500?????????????????2580?????? ???6?????????12?ζ???????????????????RP????????????20??(700????)???????????????????5??????????3500?????????????????????????????????Щ??

?????????????????????N????????????????????????????????????????????????????????12??????????150+120*5(??????Σ???4 ??)=750??12??????120*5(??????Σ???4??)?????1350????????????????38?Σ?????????1.371429???????20?γ????????????????3????????5?????

???????5?????????4?????5????????66???????3??????????????????о????????????1.5???????44?Σ????????1760??????????????????????????40?β????????????5???????????8?γ???????????????μ???12????????????????????????????12*2*40=960???????????????????????????????1760+960=2720.

?????4?????5?????????????????5???????????????????????????5??????????????4???????ɡ???????????5?????4??????????????????????????;????????????????4??????????PK????????????????????????????????????

?????????????????(???????)?????????????ɡ????????(????????????????????м????e????????)???????????

???????????

???????????????