It Is Thought That 63

Multiple Choice

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.