數學binomial(特急!!!:－2016韓國代購網 , 韓國代購化妝品 , 韓國代購批發 , 韓國代購教學---韓國代購/追加/寄貨

Blogtrottr

Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中

數學binomial(特急!!!

May 18th 2013, 20:56

一個女校裡面，學生生日在星期二的機率是1/7
1.找出十個女生裡有兩個或少於兩個人的生日是在星期二
所以 B(10,1/7)
答案是0.8384
2.假設有20個group，每一group是10個人，則有多少group有包含不超過兩個人士星期二生日
這題答案是16/17
但是我不知道要怎麼算，可不可以告訴我該怎麼算這一小題呢?

謝謝

This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends: 'You Say What You Like, Because They Like What You Say' - http://www.medialens.org/index.php/alerts/alert-archive/alerts-2013/731-you-say-what-you-like-because-they-like-what-you-say.html

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions