In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference if the populations are normal with equal variances.

Question

In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference  if the populations are normal with equal variances.

Quizplus · Accepted Answer

When comparing two population means with independent samples, the pooled variance is used to estimate the standard error of the sampling distribution of the sample mean difference, assuming equal variances for the two populations and normality of the populations.

In Testing the Difference Between Two Population Means Using Two