5. A clinical trial is planned to compare an experimental medication designed to lower the blood pressure to a placebo. Before starting the trial, a pilot study is conducted involving seven participants. The objective of the study is to assess how systolic blood pressure are measured at baseline and again 4 weeks later. Is there a statistically significant difference in blood pressure over time? Run the rest at a 5% significance. 6. A hypertension trial is mounted, and 12 participants are randomly assigned to receive either a new medication or a placebo. Each participant takes the assigned medication and their systolic blood pressure(SBP) is recorded after months on the assigned medication. The data are shown in table 7-9. Is there a significance in mean SBP in mean between treatments? Run the appropriate test at a= 0.05 Placebo New Medication 134 114 143 117 148 121 142 124 150 122 160 128