Question

In: Math

Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the...

Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments. Each participant takes the assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned treatment. Is there a difference in mean SBP among the three treatment groups at the 5% significance level? The data are as follows.  

Standard Treatment

Placebo

New Treatment

124

134

114

111

143

117

133

148

121

125

142

124

128

150

122

115

160

128

What is total variance (or as what it's called in ANOVA, "MStotal")?

  

A. 13.8

B.   189.6

C. 3222.9

D. 179.1

Solutions

Expert Solution

applying ANOVA:

from above MS total =3222.94/17=189.6

option B is correct


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