作者ltisld ()
看板Statistics
标题[问题] F分配求信赖区间的上界
时间Sat Feb 14 21:22:04 2009
是研究所考古题
和室友两人研究许久後仍不得其法
希望有先进能指点一二^^
93台大商研
Let X and Y equal the concentration in parts per billion of chromium in the
blood for healthy persons and for persons with a suspected disease, repectively.
Assume that the diftribution of X and Y are N(μ_x, σ^2_x) and
N(μ_y, σ^2_y). Using n=8 observationsof X: 15, 23, 12, 18, 9, 28, 11, 10
and m=10 observations of Y:25, 20, 35, 15, 40, 16, 10, 22, 18, 32.
Find a one sided 95% condifence interval that is an upper bound for
σ^2_x/σ^2_y
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.119.139.127
1F：→ moniya:[(S1^2/S2^2)*F0.05(7,9),(S1^2/S2^2)*F0.05(9,7)] 02/14 21:30
2F：→ ltisld:谢谢你喔^^ 02/15 20:26