Question

to conduct a survey about the type of phone service most people in greenville prefer, 10 different blocks in the neighborhood are chosen. on these 10 blocks, 10 houses are selected at random, and then each resident of each of those houses is interviewed. this type of sampling method is simple random sampling. stratified sampling. systematic random sampling. cluster sampling.

Explanation:

Simple random sampling selects individuals directly from the population. Stratified sampling divides the population into strata and samples from each stratum. Systematic random sampling selects at regular intervals. Cluster sampling divides the population into clusters and samples entire clusters. Here, blocks are clusters and all residents in selected houses within those blocks are surveyed, which is cluster sampling.

Answer:

cluster sampling.