In testing the difference between the means of two normal populations, using two independent samples, when the population variances are unknown and 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 unknown and unequal, and two independent samples are used to test the difference between the means of two normal populations, the sampling distribution of the resulting statistic follows a Student t-distribution.

In Testing the Difference Between the Means of Two Normal