题目
题目
简答题

In 2016, the average fee paid by customers for tax returns was $160. Assume that the standard deviation of fees was $56 but that we have no idea regarding the shape of the population distribution.  What’s the standard deviation of the sample means of randomly selected samples of 40 customers?  Provide the answer as a fraction to three decimal places.

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We are asked for the standard deviation of the sampling distribution of the sample means when sampling 40 customers. First, re......Login to view full explanation

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