Assuming the population variances are known, the population variance of the difference between two means is _____________.
A) The sum of the two means
B) The sum of the two population variances
C) The sum of the two population standard deviations
D) The sum of the two sample sizes for each population

Question

Quizplus · Accepted Answer

The population variance of the difference between two means is the sum of the variances of the two populations. This is known as the variance of the sampling distribution of the difference between means.

Assuming the Population Variances Are Known, the Population Variance of the Difference