作者arriy (以前˙以後)
看板Statistics
标题[问题] Hogg书上的两个问题@@
时间Thu Oct 7 02:32:07 2010
1. p.19 1.2-18
let the interval[-r,r]be the base of a semicircle.
if a point is selected at random from this interval,
assign a probability to the event that the length of the
perpendicular segment from the point to the semicircle is
less than r/2.
2.P.38 1.4-18
bowl A contains three red and two white chips.
and bowl B contains four red and three white chips.
A chip is drawn at random from bowl A and transferred to bowl B.
Compute the probability of then drawing a red chip from bowl B?
第一题我看不太懂他要问什麽 而且後面没有偶数题的答案 不知从何解起..
第二题我看得懂题目 可是我不知道怎麽解 有高手能帮帮忙吗 囧
抱歉 因为hogg书上没有答案 能否顺便提供答案 如果有详解更好^^
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※ 编辑: arriy 来自: 203.68.164.26 (10/07 20:27)