Distribution of Sample Mean Differences

Sampling Distribution of Sample Mean Differences

  Standard Deviation of Source Population = ±_T
  Sample Sizes: n_a=;  n_b=_T
  Standard Error of Sample Mean Differences = ±

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xxx

Mean_a—Mean_b

Mean Difference in Tail	P
Left \| Right	1 tail	2 tail

Critical values of
Mean Difference in Tail

P	1 tail	2 tail
.050 .025 .010 .005 .001

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