作者gundam00 (傻那驾驶中)
看板Grad-ProbAsk
标题Re: [问题] 假设检定的设定
时间Tue Mar 17 01:55:14 2009
※ 引述《ireland707 (koala)》之铭言:
: 这题是我在写中央考古题看到的,
: A local eat-in pizza retaurant want to investigatethe possibility
: of starting to deliver pizzas. the owner of the store has determined
: that home delivery willbe sucessful if the averag time spent on the
: deliveries does not exceed 26 minutes. The owner has randomly selected
: 17 customers and has deliver pizzas to their homes.Whatare the hypotheses
: the owner should test to show that pizza delivery will not be sucessful?
: (1)H0:u=26 (2)H0:u=26 (3)H0:u<26 (4)H0:u=26
: H1:u>26 H1:u≠26 H1:u=26 H1:u<26
: 我在写的时候,因为它最後一句说的是要检验它是不成功的
: 所以我选的是1,因为只要可以拒绝掉H0,也就是u会大於26
: 也就是不成功的,但是我看高点的统计详解,写的是第4个答案
: 到底哪一个才是正确答案呢?
原本成功的假设检定是
H0:μ<=26
H1:μ> 26
他现在要不成功 所以颠倒过来
H0:μ>=26
H1:μ< 26
我是这麽解释的......
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1F:→ sak1346:=.= 我跟你相反 03/17 09:08
2F:→ KOLD:店家假定自我 ,关西来说应该像消费者基金会那样检定 应该是1 03/17 11:37