Polyunsaturated fatty acids are believed to reduce the risk for cardiovascular disease. The principal dietary polyunsaturated fat is linoleic acid. To test the effects of dietary supplements of linoleic acid on blood pressure, we put 10 adults on a diet that contained 23g/day of safflower oil (high in linoleic acid) for 4 weeks. Blood-pressure measurements were taken at baseline (before ingestion of oil) and 1 month later (see data below). We do not know whether systolic blood pressure is normally distributed. We want to determine whether linoleic acid favorably affects systolic blood pressure. Conduct the appropriate two-sided test at a=0.05 to determine whether linoleic acid supplementation affects systolic blood pressure