[問題] 統計信賴區間的問題

[LiUBaC (聰明有限努力無限)]

If instead of the 95% confidence coefficient above, a 99% confidence
   coefficient had been used:

(A) The interval would be wider and, hence, more precision.
(B) The interval would be wider and, hence, less precision.
(C) The interval would be narrower and, hence, more precision.
(D) The interval would be narrower and, hence, less precision.
(E) NO definitive statement can be made regarding how this change would
    affect the width and precision of the confidence interval.

請指點迷津
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推 chironfish:(A)
推 bluekai:區間會拉大沒疑問..但是會 more 精確??
→ bluekai:很寬的區間不是較不精確嗎??
推 James73:99%會在區間裡面阿
推 weiheng:(B)
推 gurd:精確.準確一個指的是區間寬度一個是信心水準
→ gurd:(A)吧....
推 matsui32:(A)
推 sky429:precise 是準確還是精確
推 minkey:A
推 akaie:有說清楚是什麼區間嗎? 拒絕區間還是接受區間?
推 eattea:A,減少樣本數和增加水準都使區間變寬但效用不同
推 ILSYC:precise指精確(變異數)  accurate指準確(期望值)
推 bbacon:B
推 weiheng:請原po 公佈答案吧...@@
推 mmkiller:B吧 阿發越小-->區間越大 -->精確度越小
推 binzip:(B) 區間變寬，但不一定更準確 n大才會準確
推 starmovie:B吧...區間變大,但是比較不準
推 chironfish:後來查,precise應是精確,所以應該是B吧 @@
推 LiUBaC:補習班的解答是B