When testing for the significance of the difference between two sample means,we must first estimate ____ before we can compute the test statistic.
A)the standard deviation of the sampling distribution
B)the standard deviations of the samples
C)the population means
D)the critical region

Question

Quizplus · Accepted Answer

To compute the test statistic for the difference between two sample means, we first need to estimate the standard deviation of the sampling distribution, often referred to as the standard error of the difference between means.

When Testing for the Significance of the Difference Between Two