1. A doctor claims that a special diet will help to lower a person's blood pressure. Six different people were put on the special diet and their blood pressures were recorded before the diet began and after being on the diet for several months. Test the claim that the blood pressure will be lower after being placed on the diet. Use a = .01 before 132 210 167 150 175 169 after 130 180 149 153 162 160 D