A doctor wants to know iFa blood pressure medication is effective. 6 subjects have their blood pressures recorded. After 12 weeks on the medication, the same 6 subjects have their blood pressure recorded again. For this test. only systolic pressure is of concern. Test at the 1% significance level. PatientA B C D E F Before 161162165162 166171 Alter 158159166166 16? 169 a. W mt is the test statistic? b. What is the p-valLIe? Ifyour answer is less than .01. enter 6. c. What is the sample mean difference? d. Do we reject the null hypothesis? 0 A.Yes O B. No