作者查詢 / ejnfu

總覽項目： 發文 | 留言 | 暱稱
作者 ejnfu 在 PTT [ Math ] 看板的留言(推文), 共5則
限定看板：Math
看板排序：
全部NBA7364Tech_Job5612Tennis4748HatePolitics4245Gossiping4074marriage1943studyabroad1849WomenTalk1288Stock1045Baseball856SENIORHIGH838Oversea_Job597Lakers529Mavericks348home-sale336Immigration288Boy-Girl218basketballTW204CareerPlan199C_Chat100movie92Soft_Job89StarCraft79Salary63MobileComm60Beauty58nCoV201958NTU55Celtics52WorldCup47Olympics_ISG44CFP30Djokovic30Hsinchu24Monkeys23NBA_Film23TOEFL_iBT22medstudent21Tainan19joke18ONE_PIECE18Isayama17Elephants13UTAH-JAZZ13Foreign_Inv11Raptors10car9Golden-Award9GRE9KoreaDrama9Teacher9BLAZERS8D_Nowitzki8Knicks7NCAA7Aviation6comm_and_RF6CourtBasketB6G-S-WARRIORS6Hunter6SP2_Basket6ToS6AI_Art5L_TalkandCha5Math5Military5Finance4Hawks4LoL4MiamiHeat4StupidClown4Hornets3logic3Orl-Magic3RDSS3RESIT3Spurs3StephenCurry3TaiwanDrama3Thunder3TY_Research3VISA3Bioindustry2Bucks2Chicago2EAseries2FuMouDiscuss2Grizzlies2JasonKidd2JinYong2Kings2KMT2LaClippers2Mechanical2Militarylife2Nuggets2Pistons2PublicIssue2Rockets2TOEIC2Wizards2YOLO2AfterPhD1b99902HW1Cavaliers1CYCU_ICE90AB1Detective1DIABLO1FatMonkeys1Federer1Feminism1Gamesale1GetMarry1Gov_owned1graduate1HitmanReborn1HSNU_10081Japan_Travel1Jeremy_Lin1Kaohsiung1L_LifePlan1LeBronJames1MdnCNhistory1mobilesales1NBAEasyChat1NBAGAME1NDHU_OECLab1NTTU_CSIE991NtuDormM11Pelicans1PHX-Suns1sex1specialman1Statistics1TaichungBun1Wanhua1<< 收起看板(136)
首頁
上一頁
1
下一頁
尾頁
[中學] 機率問題
[ Math ]6 留言, 推噓總分: +3
作者: lengs - 發表於 2012/05/16 05:55(13年前)
5F推ejnfu:4就是看老大~老么中哪一個是不同性別05/16 20:30
[中學] 期望值
[ Math ]8 留言, 推噓總分: +1
作者: glmm - 發表於 2012/05/10 11:02(13年前)
4F推ejnfu:每次拿到一點的機率為0.4(60元+20元) 所以每次可拿05/10 19:10
5F→ejnfu:的點數之期望值為(1*0.4+0*0.6)=0.4(點)05/10 19:10
6F→ejnfu:所以期望值總次數為10/0.4=25(次)05/10 19:11
7F→ejnfu:第一行打錯 0.4的機率是60元+80元05/10 19:11
首頁
上一頁
1
下一頁
尾頁