One sample has n = 5 scores and the second has n = 10 scores.If the pooled variance for the two samples is 30,what is the value of the estimated standard error for the sample mean difference?
A)2
B)√2
C)9
D)3

Question

Quizplus · Accepted Answer

The estimated standard error for the sample mean difference is calculated using the formula: SE = √(sp²/n1 + sp²/n2), where sp² is the pooled variance, and n1 and n2 are the sample sizes. Substituting the given values: SE = √(30/5 + 30/10) = √(6 + 3) = √9 = 3.

One Sample Has N = 5 Scores and the Second