作者bunyham (☆★魔動王★☆)
看板Statistics
標題[問題] 機率
時間Wed Feb 20 07:50:28 2008
可以麻煩高手們幫我解答一下嘛?
A commuter plane has 30 seats. The airline has sold 33 tickets for the next
flight. The no-show rate is 5%.
A couple traveling together are on standby for this flight.
What is the probability that both the standby passengers will
be able to get on the flight because of no‐shows?
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1F：推 chrisjon:30個座位賣33張票，有5%的人不會來登機 02/20 09:04
2F：→ chrisjon:一對夫妻要搭機且能後補得上，所以必需至少5人沒來登機 02/20 09:05
3F：→ chrisjon:簡單的說，就是在求X~B(33,0.05) P(X>=5) 02/20 09:05