102年經建的普考統計學概要 - 普考

By Edith
at 2013-07-22T05:48
at 2013-07-22T05:48
Table of Contents
普考統計第二大題
已知一組n=200資料分布為鐘型分配 平均數60 標準差10
第1小題略
第二小題 有多少觀察直超過75??
以下為原始題目
http://wwwc.moex.gov.tw/ExamQuesFiles/Question/102/102090_41530.pdf
想法
我的疑問是 鐘型分配 和對稱鐘型有一樣嗎?
我知道對稱鐘型就是常態分配
那這題應該要用單邊柴比雪夫 還是用常態分配標準化呢??
因這兩個答案算出來 答案差很多
如果用單邊柴筆雪夫
P(X>75) < (10^2)/(10^2+15^2)=0.3077
200*0.3077 約=61
如果用常態分配標準化 P(X>75)=P(Z>1.5)=0.0668
200*0.0668 約=13
因為此張考卷第三大題考的是常態分配 我想說怎麼連續兩題都考常態分配
因此推估第二大題第二小題 應該考的是單邊柴比雪夫 這樣對嗎?
還是說 第二大題第二小題 用常態分配標準化也可以呢??
麻煩各位高手了 謝謝
--
Tags:
普考
All Comments

By Adele
at 2013-07-23T13:47
at 2013-07-23T13:47

By Liam
at 2013-07-27T23:02
at 2013-07-27T23:02

By Zora
at 2013-07-30T06:52
at 2013-07-30T06:52

By Ivy
at 2013-08-04T00:08
at 2013-08-04T00:08

By Hazel
at 2013-08-06T16:02
at 2013-08-06T16:02

By Sandy
at 2013-08-11T00:32
at 2013-08-11T00:32

By Oliver
at 2013-08-14T04:56
at 2013-08-14T04:56

By Frederic
at 2013-08-18T23:03
at 2013-08-18T23:03

By Yedda
at 2013-08-22T13:10
at 2013-08-22T13:10

By Kristin
at 2013-08-24T04:43
at 2013-08-24T04:43

By Oliver
at 2013-08-25T23:35
at 2013-08-25T23:35

By Rae
at 2013-08-28T05:25
at 2013-08-28T05:25

By Thomas
at 2013-08-31T07:30
at 2013-08-31T07:30

By Oscar
at 2013-09-03T00:35
at 2013-09-03T00:35

By Quintina
at 2013-09-05T18:25
at 2013-09-05T18:25

By Una
at 2013-09-06T07:40
at 2013-09-06T07:40

By Genevieve
at 2013-09-08T07:52
at 2013-09-08T07:52

By Margaret
at 2013-09-10T05:11
at 2013-09-10T05:11

By Caroline
at 2013-09-10T21:02
at 2013-09-10T21:02

By Eden
at 2013-09-15T15:23
at 2013-09-15T15:23

By Tom
at 2013-09-18T21:53
at 2013-09-18T21:53

By George
at 2013-09-20T16:44
at 2013-09-20T16:44

By Joe
at 2013-09-23T18:40
at 2013-09-23T18:40

By Rachel
at 2013-09-27T05:36
at 2013-09-27T05:36

By Ophelia
at 2013-09-29T17:54
at 2013-09-29T17:54

By Mia
at 2013-10-02T11:42
at 2013-10-02T11:42

By Emma
at 2013-10-04T06:58
at 2013-10-04T06:58

By Rebecca
at 2013-10-07T06:15
at 2013-10-07T06:15
Related Posts
32項技師高考 明年全數舉辦

By Kelly
at 2013-07-21T07:33
at 2013-07-21T07:33
三等(高考)農業技術 or 四等(普考)農業

By Olga
at 2013-07-21T00:04
at 2013-07-21T00:04
高考人事行政&關務四等一般行政的選擇?

By Sandy
at 2013-07-19T22:42
at 2013-07-19T22:42
關於今年財稅的問題

By Hedy
at 2013-07-19T16:45
at 2013-07-19T16:45
等待高普考放榜期間工作

By Noah
at 2013-07-19T10:14
at 2013-07-19T10:14