In testing the difference between the means of two normally distributed populations using independent random samples with equal variances, the correct test statistic to use is the
A) z statistic.
B) t statistic.
C) F statistic.
D) chi-square statistic.
E) None of the other choices is correct.

Question

Quizplus · Accepted Answer

This is because we used the pooled estimate of the variance.

In Testing the Difference Between the Means of Two Normally