In testing the difference between the means of two normally distributed populations using large,independent random samples with known variances,the correct test statistic to use is:
A)Z statistic
B)t statistic
C)F statistic
D)Chi-square statistic
E)None of the above

Question

Quizplus · Accepted Answer

When comparing the means of two populations with known variances using large samples, the Z statistic is appropriate because it assumes normal distribution and known population variances.

In Testing the Difference Between the Means of Two Normally