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7) A researcher wishes to determine whether people with high blood pressure can reduce their blood pressure by following a particular diet. Use the sample data below to construct a 99% confidence interval for u1 - u2 where u1 and u2 represent the mean for the treatment group and the control group respectively
A) -26.7 < μ1 - μ2 < -2.5 B) -1.3 < μ1 - μ2 < 30.9
C) -29.0 < μ1 - μ2 < -0.2 D) -30.5 < μ1 - μ2 < 1.3
D) -30.5 < μ1 - μ2 < 1.3