on a saturday, he asks every tenth person who...
on a saturday, he asks every tenth person who walks into the grocery store closest to the school which type of t results of his survey are shown.\n|type of book|number of people|\n|novel|22|\n|nonfiction|13|\n|graphic novel|5|\nbased on his survey, the librarian thinks he should buy mostly novels.\nwhich statement about this inference is true?\na the inference is valid because the survey was random.\nb the inference is not valid because the survey was not random.\nc the inference is valid because 22 is greater than 13 and 5 combined.\nd the inference is not valid because the survey was not limited to middle school students.
Answer
# Brief Explanations:
The survey was conducted by asking every tenth person who walks into a grocery - store near the school. This is a form of systematic sampling and can be considered random. Since more people in the survey preferred novels, it is reasonable to conclude that the librarian should buy mostly novels.
# Answer:
A. The inference is valid because the survey was random.