The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear...

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Economics

The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear in the world. Diadora's footwear products are primarily designed for athletic use, but also for casual and leisure wear. Historical data indicates that the average customer buys 5.6 pairs of sports shoes per year, with a population standard deviation of 2.9. If samples of 36 customers are taken, answer the following questions. What is the probability that the difference between a given sample mean and the population mean is less than 0.21?

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