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Describe if one-tail or two-tail tests should be used. Why? Interpret the findings produced by the Data Analysis tool. How many tests would be needed

Describe if one-tail or two-tail tests should be used. Why? Interpret the findings produced by the Data Analysis tool. How many tests would be needed to compare all suppliers in the list? (hint: combination formula). Is Excel well suited for this? Feel free to highlight any challenges or learnings you experienced with Excel

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