It is thought that 63.7% of the student body owns a school sweatshirt. A student reports that from a simple random sample of 1000 students, 637 own a school sweatshirt.
A) This should be trusted since it matches exactly what was thought.
B) It is highly unlikely that an SRS would yield results exactly matching what was expected.
C) Thus, 6.37% of the sample own a school sweatshirt, which refutes the original thought.
D) The student didn't get IRB approval, so the results are invalid.

Question

Quizplus · Accepted Answer

It is unlikely for a simple random sample to yield results exactly matching what was expected. However, the reported proportion of 63.7% is within the margin of error of the sample proportion of 63.7%. Therefore, the reported results can be considered reasonably accurate. The other choices are not relevant or accurate in this scenario.

It Is Thought That 63