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)20

Question

Quizplus · Accepted Answer

The estimated standard error for the sample mean difference is calculated using the formula: $\sqrt{\frac{2(S_p^2)}{n}}$, where $S_p^2$ is the pooled variance and $n$ is the sample size for each group. Substituting the given values, we get $\sqrt{\frac{2(40)}{5}} = \sqrt{16} = 4$.

Two Samples,each with N = 5 Scores,have a Pooled Variance