Question #98315

A computer engineer identifies four ways that a
certain job can be done. To determine how long it
takes operators to do the job when each of these
methods is used, the engineer asks four operators
to do the job using the method A, another four
operators to do the job using method B, and so on.
Each operator's time (in seconds) is shown below :
A B C
19 18 21 22
17 16 20 23
22 15 19 21
20 14 19 20
Construct the relevant analysis of variance table
and test the hypothesis that the average time of
all operators are equal at 1% level of significance.
(Given that F0,010, 12) = 5'95)

Expert's answer

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