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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
9 Nov 2021

Given information

Given Thuy Dau, Ngoc Bui, Sam Su, and Lan Voung conducted a survey as to how long customers at Lucky claimed to wait in the checkout line until their turn. Let X = time in line.  We have to calculate the sample mean and the sample standard deviation.

Step-by-step explanation

Step 1.

Sample mean

Standard deviation 

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