Which Statistical Technique Is Appropriate When We Compare Two Populations

Multiple Choice

Which statistical technique is appropriate when we compare two populations of nominal data with exactly two categories?

A) The z-test of a population proportion.
B) The z-test of the difference between two proportions.
C) The chi-squared test of a contingency table.
D) The z-test of a population proportion and the z-test of the difference between two proportions.
E) The z-test of the difference between two proportions and the chi-squared test of a contingency table.