标题: Sampling and Estimation - T value vs. Z values [打印本页]

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作者: clearlycanadian    时间: 2011-7-13 16:26     标题: Sampling and Estimation - T value vs. Z values

With T-values are you always doing a two-tailed test?

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作者: MythosHF    时间: 2011-7-13 16:26

Nope, can be one tailed as well.

What makes you think so?

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作者: spartanag07    时间: 2011-7-13 16:26

A confidence interval will always use 2 tailed regardless of T or Z.

This is because with CI, you are interested in the range of results with the mean being the point estimate.

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作者: invic    时间: 2011-7-13 16:26

interesting......thanks.

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