Cell Phones) An article in IEEE International Symposium on Electromagnetic Compatibility quantified absorption of electromagnetic energy and the resulting thermal effect from cellular phones. The experimental results were obtained from in vivo experiments conducted on rats. The arterial blood pressure values (mmHg) for the control group (8 rats) during the experiment are x, = 90, $, = 5 and for the test group (9 rats) are $2 = 115, $2 = 10. Is there evidence to support the claim that the test group has higher mean blood pressure, such that HA: