A doctor wants to know if a blood pressure medication is effective, using 1% level of significance. Six subjects have their blood pressure recorded. After twelve weeks on the medication, the same six subjects have their blood pressure recorded again. For this test, only systolic pressure is of concern.

Paired T-Test and Cl: Before, After Descriptive Statistics Sample N Mean StDey, SE Mean Before 6 164.50 5.73 1.52 After 6 163.17 4.71 1.92 Estimation for Paired Difference 95% Lower Bound Mean StDev SE Mean for u_difference 1.332 1.862 0.760 0.198 P difference meon of (Before - Aften Test Null hypothesis Alternative hypothesis Hatelifereece 2 0 T Value P Value