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 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 3. 8 Subject 1 2 3 4 5 6 7 8 Blood pressure before 134 122 118 130 144 125 127 133 Blood pressure after 130 120 123 127 138 121 132 135 Difference 4 2 -5 3 6 4 -5 -2 Table 3: Blood pressure of eight test subjects (a) (1 point) Calculate d and sd. (b) Conduct a hypotheses test to establish if jogging leads to reduction in average systolic blood pressure. Use p-value. (i.) (1 point) State the hypotheses. (ii.) (1 point) Calculate test statistic. (iii.) (1 point) Calculate degrees of freedom. (iv.) (1 point) Calculate the p-value of the test. (v.) (1 point) State your decision. (vi.) (1 point) Write the interpretation.