Reference no: EM132856974

Answer questions and solve problems involving paired data. Answer the following questions:

• Review the following data where patients with high blood pressure are given a drug that is thought to lower their blood pressure. The "before" amounts represent their blood pressure before taking the medicine. The "after" amounts represent their blood pressure after taking the medicine for three months:

Subject Before After

1 140 140

2 148 140

3 146 138

4 154 152

5 142 144

6 151 148

7 140 138

8 148 146

9 146 148

10 154 150

11 142 140

12 151 148

13 153 150

• State why a sign test for matched pairs would be appropriate for this example.
• Set up the hypotheses to determine if the claim is that the medicine helps to reduce blood pressure.
• Calculate the test statistic and p-value for this example.
• What would your conclusion be at the 0.05 level of significance?