A medical researcher wishes to try three different techniques to lower cholesterol levels of patients with highcholesterol levels. The subjects are randomly selected and assigned to one of three groups. Group 1 is givenmedication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of sixweeks, each subject?s cholesterol level is recorded. Find the test statistic F to test the hypothesis that there is nodifference among the means. Use ? = 0.05. $$\begin{array} { c c c }
\hline \text { Group 1 }&\text { Group 2 }&\text { Group 3 } \
\hline 13 & 8 & 4 \
12 & 2 & 12 \
9 & 3 & 4 \
15 & 5 & 6 \
11 & 4 & 9 \
8 & 0 & 8 \
\hline
\end{array}$$
A) 11.095
B) 9.812
C) 8.369
D) 12.162

Question

A medical researcher wishes to try three different techniques to lower cholesterol levels of patients with highcholesterol levels. The subjects are randomly selected and assigned to one of three groups. Group 1 is givenmedication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of sixweeks, each subject?s cholesterol level is recorded. Find the test statistic F to test the hypothesis that there is nodifference among the means. Use ? = 0.05. $$\begin{array} { c c c } 
\hline \text { Group 1 }&\text { Group 2 }&\text { Group 3 } \  
\hline 13 & 8 & 4 \
12 & 2 & 12 \
9 & 3 & 4 \
15 & 5 & 6 \
11 & 4 & 9 \
8 & 0 & 8 \
\hline
\end{array}$$
A) 11.095
B) 9.812
C) 8.369
D) 12.162

Quizplus · Accepted Answer

The F-test statistic is calculated using ANOVA. After computing the sum of squares between groups and within groups, and dividing by their respective degrees of freedom, the F-value is found to be approximately 11.095.

A Medical Researcher Wishes to Try Three Different Techniques to Lower