In testing the difference between the means of two normal populations using two independent samples when the population variances are unequal,the sampling distribution of the resulting statistic is:
A)normal.
B)Student-t.
C)approximately normal.
D)approximately Student-t.

Question

Quizplus · Accepted Answer

When the population variances are unequal and the sample sizes are small, the sampling distribution of the statistic is approximately Student-t. Therefore, the best choice is D, which corresponds to approximately Student-t.

In Testing the Difference Between the Means of Two Normal