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a.Huawei has several stores in major metropolitan shopping centers. The company's sales experience indicates that daily cell phone sales in its stores has a mean

a.Huawei has several stores in major metropolitan shopping centers. The company's sales experience indicates that daily cell phone sales in its stores has a mean of 60 and a standard deviation of 15. The marketing department conducts number of routine analyses of sales data to monitor sales performance. What is the probability that store sales days will have sales between 85 and 95?

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