At the Pioneer School District, the average score over the past 5 years for the math portion of the Scholastic Aptitude Test (SAT) was 505. An educator believes that recent changes to the math curriculum have resulted in improved scoring on this part of the test. In an attempt to verify this she gathers a simple random sample of 12 students and has them take the math portion of the SAT with the following results (assume the population of SAT math scores is normally distributed).

542 490 550 600 480 500 510 550 570 480 510 530

A)

Choose the set that best represents the null and alternative hypotheses. Ho: H =505, H1: W 505