A random sample of 255 medical school applicants at a university had an average MCAT score of 31.6 with a standard deviation of 2. The dean of admissions wants to know if the applicants at their university have a true average that is different than the national average of all applicants, which is 30. Test at .05 significance. Ho: Select an answer Select an answer HA: Select an answer Select an answer Test Statistic: P-value: Did something significant happen? Select an answer Select the Decision Rule: There Select an answer Select an answer Select an answer enough evidence to conclude