Historical data show that customers who download music from a popular Web service spend approximately $ 26
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Historical data show that customers who download music from a popular Web service spend approximately $ 26 per month, with a standard deviation of $ 4. Find the probability that a customer will spend at least $ 20 per month. How much (or more) do the top 10 percent of customers spend?
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Related Book For
Business Analytics Methods Models and Decisions
ISBN: 978-0321997821
2nd edition
Authors: James R. Evans
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