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A random sample of 27 customers who were surveyed at the drive-thru window of a fast- food restaurant yielded a mean receipt total of $23.71

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A random sample of 27 customers who were surveyed at the drive-thru window of a fast- food restaurant yielded a mean receipt total of $23.71 with a sample standard deviation of $5.18. Estimate a 95% confidence interval for the mean amount customers will spend in that drive-thru

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