Question

To conduct a survey, questionnaires were sent out to all companies based in the United States that manufacture durable goods. Three hundred sixty-eight questionnaires were returned.

Sample:

A. Convenience sample
B. Stratified sample
C. Random sample
D. Quota sample

Answer 1

The survey design described in the question is a cluster sample, where the population is divided into clusters and a random sample of clusters is selected to be included in the study.

Step-by-step explanation:

The survey design described in the question is a cluster sample. In a cluster sample, the population is divided into clusters or groups, and a random sample of clusters is selected to be included in the study. In this case, the manager randomly selected four departments, which act as clusters, and conducted interviews with all the employees in those four departments.