作者annzi (打桌球)
看板Statistics
标题[问题] 卡方检定
时间Wed Feb 10 11:12:21 2010
A saleperson makes 5 calls per day.A sample of 200 days gives the frequencies
of sales volumes listed below
(frequency) days 0 1 2 3 4 5
numbers of sales 10 38 69 63 18 2
假设母体为二项式分配 p=0.50
拒绝 α=0.05
我想问是抽样自二项母体~ B(n=5,p=0.5)
n=5是如何决定的 ?
谢谢
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1F：→ whitetall:因为 5 calls per day 02/10 11:53
2F：→ kanebo998:一天做五次call 每次都一个柏努力 02/10 12:20
3F：推 peiwinds:然後你在用 190 * C5取x * 0.5^x * 0.5^(5-x)求期望次数 02/10 14:28
4F：→ annzi:谢谢呐 02/11 10:06