Question

a principal orders t - shirts and wants to check some of them to make sure they were printed properly. she randomly selects 2 of the 10 boxes of shirts and checks every shirt in those 2 boxes. what type of sample is this? choose 1 answer: a simple random sample b stratified random sample c cluster random sample d systematic random sample e none of the above

Explanation:

In cluster random sampling, the population is divided into clusters (here, the boxes of shirts are clusters). Then, some of these clusters are randomly selected, and all elements within the selected clusters are included in the sample. The principal randomly selects 2 boxes (clusters) out of 10 and checks all shirts in those 2 boxes. This fits the definition of cluster random sampling.

Answer:

C. Cluster random sample