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A company's average accounts receivable per customer is $132.54. After a problem in the automated accounting software is suspected, a random sample of 38 accounts
A company's average accounts receivable per customer is $132.54. After a problem in the automated accounting software is suspected, a random sample of 38 accounts reveals a sample mean of $143.55 and a sample standard deviation of $38.29. After running a two-sided hypothesis test of the hypothesis that the average accounts receivable has changed, the best conclusion ( using a 95% confidence level) is:
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