When conducting a t test for independent means,once the variances are known for each of the distributions of means,the variances can be added together to give the
A)pooled estimate of the population variance.
B)variance of the distribution of differences between means.
C)t score.
D)power of the study.

Question

Quizplus · Accepted Answer

The variances of the distributions of means for two independent samples are added together to calculate the variance of the distribution of differences between means, which is essential for conducting a t-test for independent means. This combined variance is used to estimate the standard error of the difference between the two means, which is then used to calculate the t score.

When Conducting a T Test for Independent Means,once the Variances