Question
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
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 choose the correct expression for a 99% confidence interval for1-2where1and2represent the mean for the treatment group and the control group respectively. Use 150 degrees of freedom. Right-click the links to open a pdf t-table and worksheet templatet-tableandExcel file.
BLOOD PRESSURE STUDYTreatment GroupControl Groupx1= 189.1x2= 203.7s1= 38.7s2= 39.2n1= 85n2= 75
(189.1 - 203.7)2.6090
(38.7)2
85
+(39.2)2
75
(189.1 - 203.7)2.6090
38.7
85
+39.2
75
(189.1 - 203.7)2.6090
38.7
85
+39.2
75
(189.1 - 203.7)2.6090
(38.7)2
85
+(39.2)2
75
(189.1 - 203.7)2.6090
(38.7)2
85
+
(39.2)2
75
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