A question of medical interest is whether jogging leads to a reduction in systolic blood pressure. To learn about this question, eight non-jogging volunteers have agreed to begin a 1-month jogging...

a. The appropriate hypotheses are

b. The value of test statistic and p-value is

c. At the significance level calculated in part b), we conclude that jogging

Extracted text: A question of medical interest is whether jogging leads to a reduction in systolic blood pressure. To learn about this question, eight non-jogging volunteers have agreed to begin a 1-month jogging program. At the end of the month, their blood pressures were determined and compared with earlier values. The data are presented in the Table 1. 1 2| 3 Subject Before 134 122 After 130 120 123 Difference 4 5 118 | 130 | 144 | 125 127 138 121 3 6 127 133 7 132 135 4 -5 4 -5 -2 Table 1: Blood pressures of eight test subjects