作者winwin99 (随风)
看板Statistics
标题[问题] t检定
时间Mon Apr 9 11:26:15 2007
A tire manufacturer wishes to determine whether, on the average, a brand of
steel-belted radial tires provides more than 50,000 miles of wear.
A random sample of 36 tires yielded a mean, X , of 52,100 miles and a standard
deviation, s, of 2,500 miles.
(a) Use t to test the null hypothesis at the .01 level of significance.
请问 假设是不是ho:u=50000 h1:u>=50000 ?
烦请高手帮我看一下 谢谢
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 124.8.13.203
1F：推 chrisjon:H1不会出现等号 04/09 12:17
2F：推 hushenpaul:ho:u>=50000 h1:u<50000 04/09 12:58