In a manufacturing company, a one-month training programme is conducted to each employee. A new training programme has been developed. To test the new programme, 2 groups of 9 employees each were assigned a job, the first group trained under the old system and the second trained under the new programme. Their performance timings in minutes are recorded as follows. Old programme 31 38 36 30 42 34 32 33 39 New programme 34 33 26 36 31 28 27 29 35 Do the job execution times present sufficient to indicate that the mean time is iess for the new training programme?
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