Two samples,each with n = 5 scores,have a pooled variance of 40.What is the estimated standard error for the sample mean difference??
A)?4
B)?8
C)?10
D)? $\sqrt { 20 }$

Name: Two samples,each with n = 5 scores,have a pooled variance of 40.What is the estimated standard error for the sample mean difference?? A)?4 B)?8 C)?10 D)? $\sqrt { 20 }$
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Question

Quizplus · Accepted Answer

The estimated standard error for the sample mean difference is:$$s_d = \sqrt{\frac{2s^2}{n}} = \sqrt{\frac{2(40)}{5}} = 4$$

Two Samples,each with N = 5 Scores,have a Pooled Variance 20\sqrt { 20 }20​

Two Samples,each with N = 5 Scores,have a Pooled Variance $\sqrt { 20 }$