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.
?
Treatment
Observations
A
20
30
25
33
B
22
26
20
28
C
40
30
28
22
?
The null hypothesis is to be tested at the 1% level of significance. The null hypothesis
A. should be rejected.
B. should not be rejected.
C. should be revised.
D. should not be tested.
Answer: B
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