作者alex810830 (小豆苗)
看板Statistics
标题[问题] chi- goodness fit 检定
时间Mon Jun 3 18:26:43 2013
请问在做适合度检定的时候
可以算信赖区间吗 要如何算?
题目
It has been claimed that,
for a penny minted in 1999 or earlier,
the prob of observing heads upon spinning the penny is p=0.30.
three students got together,
and they would each spin a penny and record the number X of
heads out of the three spins.
They repeated this experiment n=200 times,
observing0,1,2,3 heads 57,95,38,10 times,respectively.
Use these data to test the hypoteses that X is b(3, 0.30).
Give limits for the p-value of this test.
In addition,out of the 600spins,
calculate the number of heads occurring and then a 95% CI for p.
感谢看完 ><
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1F：→ alex810830:我可以算出卡方检定 算出来是 不拒绝H0 06/03 18:46
2F：→ alex810830:但接着我不知道p hat 如何求出 06/03 18:47
3F：→ alex810830:CI的公式应该是 p帽^±1.96*根号(p帽*q帽/n)没错吧 06/03 18:49
4F：→ yhliu:样本正面数Y = 0*57+1*95+2*38+3*10, n=600, p^ = Y/n ... 06/04 09:07