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(Solved): Exhibit 10-12 To test whether or not there is a difference between treatments A, B, ...



Exhibit 10-12
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below.

A

B

C

20

22

20

30

26

17

25

20

18

33

28

25

Refer to Exhibit 10-12. The test statistic (F) to test the null hypothesis equals

a.

0.41

b.

3.91

c.

4.68

d.

2.52



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Calculate the mean for each treatment group:
Mean (Treatment A):   
Mean (Treatment B):  
Mean (Treatment C):   

Grand Mean=  

Calculate the SS for each treatment,

  
    
  

    
  
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