A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure (in millimeters of mercury) for nine patients before taking the new drug and 2

2 hours after taking the drug are shown in the table below. Is there enough evidence to support the company's claim?

Let d=(bloodpressurebeforetakingnewdrug)(bloodpressureaftertakingnewdrug)

d=(bloodpressurebeforetakingnewdrug)(bloodpressureaftertakingnewdrug). Use a significance level of =0.01

=0.01 for the test. Assume that the systolic blood pressure levels are normally distributed for the population of patients both before and after taking the new drug.

Patient123456789Blood pressure (before)192

197

193

182

154

164

164

195

202

Blood pressure (after)177

182

187

175

143

153

158

181

194

Step1of5:State the null and alternative hypotheses for the test.