Question 3: Fresh N Friendly food store advertises that their checkout waiting times is four minutes or less. An petty customer wants to dispute this claim. He takes a random sample of shoppers at the peak time and records their checkout times as 4.8, 5.3, 3.9, 4.5, 6.8, and 5.1 minutes. Build the 95%-confidence interval for the checkout waiting time. Interpret this confidence interval in the context of the scenario and discuss whether you believe the petty customer has legimite (if asinine) dispute to the store's claim.

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