The local branch of Internal Revenue Service of an Asian country spent an average of 19 minutes
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Question:
The local branch of Internal Revenue Service of an Asian country spent an average of 19 minutes helping each of 9 people prepare their tax returns. The standard deviation was 5.6 minutes. A volunteer tax preparer spent an average of 27 minutes helping 14 people prepare their taxes. The standard deviation was 4.3 minutes. At a=0.02, is there a difference in the average time spent by the two services?
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