When subjects were treated with a​ drug, their systolic blood
pressure readings​ (in mm​ Hg) were measured before and after the
drug was taken. Results are given in the table below. Assume that
the paired sample data is a simple random sample and that the
differences have a distribution that is approximately normal. Using
a 0.010.01 significance​ level, is there sufficient evidence to
support the claim that the drug is effective in lowering systolic
blood​ pressure? Identify the test statistic. Identify the P-value
For the​ P-value method, reject Upper H 0H0 if the​ P-value is less
than or equal to the significance level alphaα. Fail to reject
Upper H 0H0 if the​ P-value is greater than alphaα. Then restate
the decision in​ simple, nontechnical​ terms, and address the
original claim. Do you fail to reject or reject and why? Before
After 205 143 212 164 195 176 209 163 210 179 183 144 158 159 188
179 203 201 189 155 155 156 167 177
