A technician changed his machine to a new one because he wants to improve in his job performance. The job completion time (in seconds) for each machines are as follows: (a) New Machine Old Machine...

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Extracted text: A technician changed his machine to a new one because he wants to improve in his job performance. The job completion time (in seconds) for each machines are as follows: (a) New Machine Old Machine 42.1 41.3 42.4 43.8 43.2 42.3 41.8 42.7 42.5 43.1 44.0 41.0 41.8 42.8 42.7 43.6 43.3 43.5 41.7 44.1 Test at 10% level of significance whether it is reasonable to assume that the two machines have equal population variances.