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)

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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