A Researcher Wishes to Determine Whether People with High Blood

Multiple Choice

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
-
,where y and y represent the population means for the treatment group and the control group,respectively.

A) (-1.5,30.7)
B) (-1.3,30.5)
C) (-29.0,-0.2)
D) (-26.8,-2.4)
E) (-30.7,1.5)