A certain stimulus administered to each of the 12 patients resulted in the following increase of blood pressure.: 5, 2, 8, -1, 3, 0, -2, 1, 5, 0, 4 and 8 Can it be concluded that the stimulus will, in general, be accompanied by an increase in blood pressure? [Given for 11 d.f., 10.05 = 2.2] Solution: Here the increments in blood pressure is denoted by d. Total d d2 528-1 3 0 -2 1 5 0 4 6 31 25 4 64 1 9 0 4 1 25 0 16 36 185 Sample size n 12(