Which of these is an example of multi-stage sampling?
a.) Randomly selecting elements from the entire population of New York
b.) Dividing the total population of New York Into groups and then selecting people in proportion
from these groups.
C.) Dividing the population of New York Into groups and then making simple random samples
from those groups.
d.) Choosing New York as a sample, then selecting a sample of zip codes within New York, then
sampling the names of people living in those zip codes.