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1. A department store, on average has daily sales of $21,000. The standard deviation of sales is $36,000. On Tuesday, the store sold $16,230 worth

1. A department store, on average has daily sales of $21,000. The standard deviation of sales is $36,000. On Tuesday, the store sold $16,230 worth of goods. Find Tuesday's z score. What is the percentile rank of sales for this day? Was Tuesday an unusual day?

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