Question

two statistics students at ucla conducted an energy - efficiency survey of graduate student apartments. there were seven university apartment buildings, and the students randomly selected three to be included in the study. in each building, they randomly chose 25 apartments. what is the largest group of students that the study results represent?

all ucla graduate student apartments.
all ucla graduate student apartments in this group of seven buildings.
all ucla graduate student apartments in the three sampled buildings.
all ucla graduate student apartments that were sampled in the three buildings.

Explanation:

Step1: Analyze sampling method

The students randomly selected 3 out of 7 building and then 25 apartments in each building. The sample is from these 3 buildings.

Step2: Determine representative group

The study results represent all UCLA graduate - student apartments in the three sampled buildings.

Answer:

All UCLA graduate student apartments in the three sampled buildings.