Concerned About the Sanitation Training Practices of Its Employees, a Major

Multiple Choice

Concerned about the sanitation training practices of its employees, a major fast-food restaurant chain randomly selected 40 of its restaurants nationwide. All employees at these 40 restaurants were tested for their knowledge of both the restaurant chain and local health code practices. This is an example of:

A) simple random sampling.
B) stratified sampling.
C) cluster sampling.
D) sampling in stages.