大學統計學問題:－線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

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大學統計學問題

Dec 26th 2013, 04:22

知識問題|

發問者：	v ( 初學者 2 級)
發問時間：	2013-12-26 12:22:20 ( 還有 5 天發問到期 )
解答贈點：	20 ( 共有 0 人贊助 )
回答：	0 意見： 0

每人每天平均會收到14.5封電子郵件，每2封就有1封是廣告信，垃圾郵件占所有郵件的47%。
問一天收到20封郵件，其中一半是廣告郵件的機率為何？試分別以二項分配及常態連續校正法求算之？

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