The president of a university claimed that the entering class this year appeared to be larger than the entering class from previous years but their mean SAT score is lower than previous years. He took a sample of 20 of thisyear's entering students and found that their mean SAT score is1,501 with a standard deviation of 53. Theuniversity's record indicates that the mean SAT score for entering students from previous years is1,520. He wants to find out if his claim is supported by the evidence at a5% level of significance. What is the population the president is interestedin?

A.

the SAT scores of all students entering universities in the U.S. this year

B.

all SAT test centers in the U.S. this year

C.

all entering students to all universities in the U.S this year

D.

all entering students to his university this year