CompTIA Data+ DA0-002 (V2) Practice Question

Because the analyst is comparing the means of two independent groups (Region A versus Region B) whose data are approximately normal with unknown but comparable variances, the correct choice is an independent two-sample t-test (Student or Welch form). A paired t-test is inappropriate because the observations are not matched or repeated on the same units. A chi-square test for independence assesses association between categorical variables, not the difference in numeric means. A one-way repeated-measures ANOVA requires the same experimental units measured under multiple conditions and is therefore unsuitable here.