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[SOLVED] Statistics - Differance in mean problem

Hi, please give me a help to find the answer for the following statistic problem,

As a production manager suppose you want to check whether the 3 filling

machines have different mean filling times. If you have assign 15 similarly trained &

experienced workers, 5 per machine, at the 5% level of significance, is there a

difference in mean filling times?

Machine 1 Machine 2 Machine 3

25.40 23.40 20.00

26.31 21.80 22.20

24.10 23.50 19.75

23.74 22.75 20.60

25.10 21.60 20.40

See the attached picture for better understanding of the problem