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Statistics - Standard Error

Group 1 m=30.000 s=2.100 n=14
group 2 m=25.000 s=1.900 n=15
What is the value of the standard error of the difference between means and the observed value of t.

Solution Preview

First we calculate the pooled estimate of the standard deviation.

S = sqrt [{(n1 - 1)s1^2 + (n2 - ...

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