A medical school admissions officer was interested in whether there is a difference in MCAT test scores (the standardized test used for medical school admission) between (1) biological sciences majors, (2) social science majors and (3) math majors. The admissions officer randomly sampled 50 students from each of these majors who applied to medical school in 2014 and recorded their MCAT score. Let M1, H2, and u3 be the MCAT scores for students who majored in biological sciences, social sciences, and math, respectively. Which of the following are the appropriate null and alternative hypotheses? O Ho: H1 = H2 = H3 HA: H1 # H2 * H3 O Ho: H1 * H2 # 13 HA: H1 = H2 = H3 O Ho: H1, H2, H3 are not all equal. HA: H1 = H2 = H3 O Ho: H1 = H2 = H3 HA: H1, H2, H3 are not all equal