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A Department Store, on Average, Has Daily Sales of $28,567

Question 27

Multiple Choice

A department store, on average, has daily sales of $28,567.95. The standard deviation of sales is $ 1000. On Tuesday, the store sold $35,492.00 worth of goods. Find Tuesday's z score. Was Tuesday an unusually good day?


A) 5.54, no
B) 6.92, yes
C) 7.27, no
D) 7.23, yes

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