标题: 2 Tailed Vs. 1 Tailed Tests [打印本页] 作者: MarginofSafety 时间: 2011-7-11 19:56 标题: 2 Tailed Vs. 1 Tailed Tests
When to use 2 tailed vs. 1 tailed test. And if you were only offered 1 tailed table, can you use it to find 2 tailed tests?作者: jarobi04 时间: 2011-7-11 19:56
two tailed when hypothesis is equal or not equal. If less than/greater than its a one tail.
Exception is for F statistic as it is always a one tail作者: economicz 时间: 2011-7-11 19:56
yazena Wrote:
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> When to use 2 tailed vs. 1 tailed test. And if you
> were only offered 1 tailed table, can you use it
> to find 2 tailed tests?
Sure - Take the alpha from the 1-tail test and double it. The one tail test gives you {Z > 1.96} for example and the two tail test would be {Z > 1.96} u {Z < -1.96} for rejection region. Double P-values as well.作者: sameeragarwal 时间: 2011-7-11 19:56
