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A hypertension trial is mounted and 12 participants are randomly assigned to receive either a new treatment or a placebo. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. The data is shown on the table. Is there a difference in mean SBP between treatments? Run the appropriate test at α= 0.05

Placebo New Treatment

134             114
143             117
148             121
142             124
150 122
160             128

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