Subject Before After

1 199 189

2 174 170

3 195 177

4 171 167

5 179 159

6 182 151

7 193 176

8 208 183

9 185 159

10 155 145

11 169 146

12 208 177

Use the data above with a significance level of 0.05 to test the claim that for the populations of blood pressures before and after the drug, the differences have a mean greater than 0 mm Hg (so the claim is that the drug helps lower the blood pressure). Use the P-Value method to determine whether or not to reject the null hypothesis and state your conclusion.

1.Write the hypotheses in symbolic form, determine if the test is right-tailed, left-tailed, or two tailed and explain why.

.Calculate the test statistic and the P-Value.

• Make a decision about the null hypothesis and explain your reasoning, then make a conclusion about the claim in nontechnical terms.