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The following are the Systolic blood pressure (mm Hg) of 12 patients undergoing drug therapy for...

The following are the Systolic blood pressure (mm Hg) of 12 patients undergoing drug therapy for hypertension: 183, 152, 178, 157, 194, 163, 144, 114, 178, 152, 118, 158. Please use the sign test to test if there is evidence that the median of the blood pressures of the population from which we assume this sample to have been drawn is different from 135 mmHg (the norm for the group). level of significance .05

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