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need correct answer QUESTION 17 Calculate the z score for the time taken to buy your product. x = 29 seconds. Use this sample data.

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QUESTION 17 Calculate the z score for the time taken to buy your product. x = 29 seconds. Use this sample data. 45, 32, 29, 63, 15, 15 QUESTION 18 Calculate the variance sales per store using this sample data 74, 49, 4, 33, 82, 76

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