question 9: a safety inspector conducts air q...
question 9: a safety inspector conducts air quality tests on a randomly selected group of 7 classrooms at an elementary school. identify the population and sample in this setting. question 10: choose 1 answer: a the population is all classrooms in the district; the sample is the 7 classrooms selected. b the population is all classrooms in the elementary school; the sample is the 7 classrooms selected. c the population is all elementary students in the school; the sample is the students in the 7 classrooms selected.
Answer
# Brief Explanations:
The population is the entire group of interest for a study. Here, the safety inspector is interested in classrooms at an elementary - school for air quality tests. So, all classrooms in the elementary school are the population. The sample is a subset of the population that is actually studied. The 7 randomly selected classrooms are the sample.
# Answer:
B. The population is all classrooms in the elementary school; the sample is the 7 classrooms selected.