Answer:
c. possible to test for equality of three or more population proportions
Step-by-step explanation:
The answer is ---
c. possible to test for equality of three or more population proportions.
When ever there is a three or more than three populations, then it is possible to test for the equality for three or more than three population proportions using a chi-square tests.
A chi-square test can be used to determine the equality of population proportion for three or more than three populations. It is very versatile and an expand theory.
Hence the answer is
c. possible to test for equality of three or more population proportions.