Math problem please help

0) Scenario C: A team of health sciences students decided on a project that would give them experience with their statistical analysis skills as well as some practice in taking vital signs. They assembled a group of 40 undergraduate students, 20 science majors, and 20 majors in other fields of study, brought them to a makeshift clinic in the science building and measured their blood pressures with a hand-held BP cuff. The results were as follows: The science majors' SBPs were: 100, 110, 116, 120, 122, 128, 128, 128, 130, 132, 132, 134, 140, 144, 146, 146, 150, 152, 154, 158. The other majors' SBPs were: 112, 118, 120, 126, 130, 130, 132, 134, 140, 142, 144, 144, 148, 150, 158, 160, 170, 172, 176, 190 1. What type of study is this and what attributes make it so? (See Week 2 PPT) 2. What is the independent variable in this scenario, and what type is it? What is the dependent variable in this scenario, and what type is it? 3.Please state a null hypothesis. 4. What is the most appropriate measure of association for this scenario (see week 2 PPT)? Calculate that measure of association