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How long does a customer have to wait until their order is complete? A random sample of 100 orders showed a sample mean 32.7 minutes

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How long does a customer have to wait until their order is complete? A random sample of 100 orders showed a sample mean 32.7 minutes with a standard deviation 7.5 minutes. Obtain the 95% confidence interval for the order completion time. [30.73 , 34.67] [29.86 , 35.54] [31.21 , 34.19] [28.05, 37.35]

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