When Jeremy surveyed thirty 7th-grade students at the community pool, he found that 2/15 had not read at least one book during July. He knows there are about 200 7th-grade students in his community, so he infers that about 40 of them did not read any books in July. Is that a good inference? Explain.

Answer:

No, Jeremy did not make a good inference. First, his calculation is incorrect: 2/15 of 200 is approximately 27 students, not 40. Additionally, the sample may be biased because he only surveyed students at a community pool, which might not represent the entire population of 7th graders in his community.