A random sample of 20 workers in one large plant took an average of 25 minutes to complete a task, with a standard devia

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answerhappygod
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A random sample of 20 workers in one large plant took an average of 25 minutes to complete a task, with a standard devia

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A random sample of 20 workers in one large plant took an average
of 25 minutes to complete a task, with a standard deviation of 5
minutes. A random sample of 15 workers in a second large plant took
an average of 20 minutes to complete the task, with a standard
deviation of 4 minutes. Use an appropriate hypothesis test, at
the one percent level of significance to find if the German workers
are more efficient?
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