作者jason1xii (大胖)
看板Statistics
标题[问题] 问一个简单的考题
时间Tue Apr 1 17:25:00 2008
A company manufactures rope whose breaking strengths have a mean of 300 lb
and a
standard deviation of 24 lb. It is believed that by a newly developed process
the mean
breaking strength can be increased. Design a decision rule for rejecting the
old
process at the 0.01 significance level if it is agreed to test 64 ropes. (
Z0.99 = 2.33)
94年 高应大
问题: 请问这有牵涉到两母体(新流程&旧流程)吗?
还是说 只要按照题意给的资料 算出 拒绝域 拒绝H0 即可?
若是两母体 可否 写出H0 & H1 假设试算一下?
请各位高手 解惑 感恩
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